NEED HELP ASAP EXPONENTS

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

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

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.