James made 15 out of 25 free throws. later, he made 21 out of 25 free throws. what is the percent increase?

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square