Linda wants to buy 2 sweaters and a pair of sunglasses at Wild Orchids. Each sweater costs the same amount. The sunglasses cost $12. Which equation can be used to find the total
cost of her purchases?

12s - 2 = C
12s + 2 = C
2s - 12 = C
2s + 12 = C

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103