You have saved a total of more than $75 but less than $120. when you count your money, you find that you have some one dollar bills, some five, and some tens. you have twice as many tens as fives and four times as many ones than fives. how much money could you have? write equations and/or inequalities (using "t" for ttens, "f" for fives and "n" for ones) in order to solve. explain your work.