Evaluate the function f(x) = x2 + 3x for both of the following:
a. find f(0)
b. find f(4)
answer quick

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2