Kelly had to multiply 5, 173, and 20. instead of multiplying the result of 5 of 173 by 20, she recognized that it would be easier to multiply 5 times 20 to get 100, and then multiply 100 times 173 to get 17,300. what property did kelly apply please help its for algebra 1 and 2 and i have no clue ​

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

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