Any geniuses here?

[.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.