What is 2-4y-7y^2+5y^2+5+4y-2y

When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

For which pair of functions is (gof)(a)=|a|-2?