The length of a rectangle is increased by 20% and width is decreased by 10%. What is the change of area in percentage?
What is the volume of a cube with a surface area of 96?
A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?
A rope 40 feet long is cut into two pieces. If one piece is 18 feet longer than the other, what is the length, in feet, of the shorter piece?
If f(x) = x2 - 2x what is the value of f(4) ?
-16
-8
0
8
Express 17: 20 is percentage?