PLEASE HELP ME QUICK!!

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

Which best describes the function on the graph? direct variation; k = −2 direct variation; k = -1/2 inverse variation; k = −2 inverse variation; k = -1/2