A rectangle's length is three feet more than twice its width. If x represents the width,
write and expression representing the
perimeter.

I don’t remember how to do these questions anymore?

Find the area of a parallelogram with base 15 yards and height 21 2/3

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?