The sum of 6, 7 times a number y and 7 times the same number y. Simplify

What is (28 + 7 + 6 + 3) x 1/2 show your work

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

Solve the system of equations y= 3/2 - 1, -x+ y =-3