Justin threw a football to his friend, and the height of the football in meters above the ground after t seconds is modeled by f (t) = -4.9++ 30t + 13. When did the football hit the ground?

1) 13 sec
2) 6.53 sec
3) 3.06 sec
4) 58.92 sec

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