Tell wether 24 is a factor or a multiple of 36

Abox of chocolates costs $7. which equation relates the number of boxes sold (x) and total cost of the boxes sold (y)?

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse