Answer:
A
Step-by-step explanation:
Dilation by 3 from origin causes each point to be multiplied by 3.
(3,3) * 3 = (9, 9)
(6, 6) * 3 = (18, 18)
(9, 3) * 3 = (27, 9)
which is A
idk
$147
378 / 18 = 21
1 hour of work = $21
7 hours of work = $21 * 7 = $147