On a test, 86% of the questions are answered correctly. if 215 questions are correct, how many questions are on the test?

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is