Answer:
You can buy 5 boxes of staples
Step-by-step explanation:
3.45 divided by $.60 is 5.75 and u cannot get .75 boxes of staples so it rounds to 5.
The legs are 5 inches long.
Use the Pythagorean theorem:

The length of the hypotenuse of the triangle is approximately 7 inches long.
15/40 x 100 = 37.5
equation for percent decrease is diiference/original x 100.
What are you trying to find? y?x?..???