To solve this expression, which operation should be performed last? [21-(5 + 2)]^2 x 3

A. numbers inside brackets squared

B. subtract 7 from 21

C. multiply by 3

D. add 5 to 2

Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. which of the following expressions could represent how much bo pays for the game? choose 2 answers: choose 2 answers: (choice a) a 0.82b0.82b (choice b) b 1.18b1.18b (choice c) c b-0.18b−0.18 (choice d) d b-18b−18 (choice e) e b-0.18bb−0.18b