Question

Please help!! I just started college

Answer 1

(r. q) (7) =
`\pm 220`

(q.r) (7) =
`\pm 220`

Explanation:

`q(x) = {x}^(2) + 6 \\ q(7) = {7}^(2) + 6 = 49 + 6 = 55\\ r(x) = √(x + 9) \\ r(7) = √(7 + 9) = √(16) = \pm 4 \\ \\ (r.q)(7) = r(7).q(7) = \pm 4 * 55 = \pm220 \\ \\ (q.r)(7) = q(7).r(7) = 55 * \pm 4 = \pm220`