Gannett's credit card has a 15% APR. Find the periodic interest rate from June

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Math i have no idea how to do a and b

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay