Asweater that originally cost $40 is on sale for 10 percent off. what is the amount of the discount?

Which number produces a rationale number when multiplied by 1/5

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid