Which expressions are equivalent to 4^-2*7^-2

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

Solve for the equation x. 2x + 22 = 4(x + 3)

Some of the images in the diagram are images of polygon 1. from similarity transformations, polygon 1 16 14 polygon 4 polygona polygons 4 6 8 10 12 14 16 18 20 22 24 26 polygon and polygon are similar to polygon 1,