Kayson mixes 300300 milliliters of spinach, 200ml of berries, and 42ml of dressing to make a salad. there are s milligrams of vitamin c per milliliter of spinach, b mg per milliliter of berries, and d mg per milliliter of dressing. which expressions can we use to describe how many milligrams of vitamin c are in the salad?

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