Any geniuses here?

[Jessika]

Well I can tell you the answer to the first and last one and then maybe explain to you how I got it??

[.sarah]

Well I can tell you the answer to the first and last one and then maybe explain to you how I got it??

Okay

b-3=2(a+4) then solve for b

Distribute first, so:
b-3=2a+8

Get b alone by adding 3 to both sides:
b=2a+11

So for the first question b. is the answer. I'll try more if you are still stumped, I am eating dinner right now.

Ah, thanks! I didn't do the distributive and that was the problem.

[boscibo]

I edited out the answer I had posted, I didn't read you didn't want the answer!

[.sarah]

I edited out the answer I had posted, I didn't read you didn't want the answer!

It's fine. What I didn't want was someone posting only the answer. Even the tutors and teachers would explain it and most likely give the answer ... it's just too late to call them now

[Jessika]

ok well you already have the first, so here's the last:

(d/5) x 7

BECAUSE:

you need to find out the price for each individual book, so you would divide the price you paid (d) by the number of books you bought (5). Then you would multiply that answer by 7 to find out how much seven books would cost. Therefore:

(d/5) x 7

EXAMPLE:

Let's say I paid $20 for 5 books. I would need to find out how much I paid for each book, so I would divide 20 by 5 (which is, of course, 4). $4 is how much you paid per book, so therefore to find the price of seven books you would multiply seven by four, which equals 28

so basically:

(20/5) x 7 = 28

I really hope I explained that well

EDIT: WHAT!! You eliminated the answer?? That means it wasn't correct??

Well darn it then!! It works, I can't see how its wrong! O_o

[ILoveMyAbbyGirl]

The answer to the first one is b=2a+11. Simply just solve for b. They give you b-3=2(a+4). Add three to both sides to get b=2a+8+3. Add together and get b=2a+11.

The second one, you could set up as a ratio. p over r (it takes p pounds to plant r rosebushes) equals x over m (x number of pounds to get m number of rosebushes). So it should look like p/r = x/m . Cross multiply (p times m and r times x) and you will get pm = rx. Divide by r and get (pm)/r.

Third: Like Jess said, divide d by five, and you will get d/5. Then multiply by 100 to get the cents. You would get 100d/5. That is the price in cents for ONE BOOK. You need SEVEN. So you will multiply by 7, and get 700d/5.

[.sarah]

The answer to the first one is b=2a+11. Simply just solve for b. They give you b-3=2(a+4). Add three to both sides to get b=2a+8+3. Add together and get b=2a+11.

The second one, you could set up as a ratio. p over r (it takes p pounds to plant r rosebushes) equals x over m (x number of pounds to get m number of rosebushes). So it should look like p/r = x/m . Cross multiply (p times m and r times x) and you will get pm = rx. Divide by r and get (pm)/r.

Third: Like Jess said, divide d by five, and you will get d/5. Then multiply by 100 to get the cents. You would get 100d/5. That is the price in cents for ONE BOOK. You need SEVEN. So you will multiply by 7, and get 700d/5.

Ah, thanks!! That makes complete sense

I just submitted it and got them all right. Thank you again!!

EDIT: Thanks, Jess and boscibo for your help!

[Jessika]

I was too slow, AND wrong LOL

I suck at the "easy" problems. I took too many "advanced" classes

[.sarah]

I was too slow, AND wrong LOL

I suck at the "easy" problems. I took too many "advanced" classes

LOL I just looked at it and was like ... hmmm ... I'm confused again. LOL

I'm the same way. Hard problems, bring 'em on. The easy ones are really hard for me I love math, though, and when I went to public school I always had people running to me for the hard problems and I went to other people for the easy ones.

[ILoveMyAbbyGirl]

No prob, lol. Math is my favorite subject.

[Jessika]

LOL I just looked at it and was like ... hmmm ... I'm confused again. LOL

I'm the same way. Hard problems, bring 'em on. The easy ones are really hard for me I love math, though, and when I went to public school I always had people running to me for the hard problems and I went to other people for the easy ones.

Well what confused me is that, my answer worked. O_o Like I even did an example LOL

But yeah, I whizzed through trig and pre-calc and even college algebra (which really isn't even that hard) but like "Easier" algebra problems I mess up anymore

[ILoveMyAbbyGirl]

Well what confused me is that, my answer worked. O_o Like I even did an example LOL

But yeah, I whizzed through trig and pre-calc and even college algebra (which really isn't even that hard) but like "Easier" algebra problems I mess up anymore

You had it all right, you just forgot that you needed to convert it to cents, so you would need to multiply the whole thing by 100. Otherwise it was all right.