What is the image of (-8,-5) after a dilation by a scale factor of 4 centered at the origin?

1. are the triangles similar and if so why? what is the value of x? show your work.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.