These are polynomials:

A rectangle's length is 7 cm greater than it's width, w.

A) Draw a rectangle and label its dimensions. I drew the rectangle and labeled the width as 7w on each side and 14w on the legth of each side. Is this correct?

B) Write an expression to find its perimeter. I wrote : 7w=14w=7w=14w and got 42w. Is this correct?

C) Collect like terms. I did that. 7w & 7w 14w & 14w Is this correct?

I have troubles with this problem as well.

The cost of publishing the school yearbook was $440. The yearbook committee priced the yearbook at $8.

A) Write an expression that represents the profit, p, for the number of yearbooks sold, n.

Not sure?

B) How many yearbooks need to be sold for the yearbook committee to break even?

Not sure what that last part meant...

Help please and thank you all.