An athlete's speed on her bike is 14mph faster than her average speed running. she can bike 31.5 miles in the same time that it takes her to run 10.5 miles. find her average speed running and her average speed biking.

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box