95 POINTS!!! PLEASE HELP what effect does a dilation by scale factor x have on the area of a rectangle?

A: Area remains the same

B: Area changes by factor of x

C: Area changes by factor of 2x

D: Area changes by factor of x2

How can a bar model be used to solve for the unknown variable in the equation below? show your work model and then solve. 2/5n-7=9 1/4

Brianna is getting materials for a chemistry experiment. her teacher gives her a container that has 0.15 liters of a liquid in it. brianna needs to use 0.4 of this liquid for the experiment. how much liquid will brianna use?

Triangle abc and triangle deg are similar right triangles. which proportion can be used to show that the slope of ac is equal to the slope of dg? a) 4 − (−7) / 0 − 4 = −1 − 10 / 4 − 8b) −4 − (−7) / 0 − 4= 4 − 8 / −1 − (−10)c) 0 − 4 / −4 − (−7) = −1 − (−10) / −4 − 8d) 0 − 4 / −4 − (−7) = −4 − 8 / −1 − (−10)