George invested $8,720 in an account that pays 7.5% simple interest. How much additional money must be invested in an account that pays 4% simple interest so that the average return on the two
investments amounts to 5%?

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

What properties allow transformation to be used as a problem solving tool

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.