Factor the expression: x^2 +10x+9

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)