Avril wrote the expression 4(x + 3) to represent the area of a rectangle. Which expression is an equivalent representation of the area? А
4x + 3
B
x(4+3)
С
4x + 12
D
3(x + 4)

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

What is the value of x? enter your answer in the box.