What is the value of the expression -9 x 2.2?

Explain why the factor 1.5 is broke. into two numbers in the model.

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so

Yvaries directly as x. y =90 when x=6. find y when x=13