HELP PLEASE i think its a bc its a decaying graph but please help
How does the medicine’s concentration change overtime?
A. The medicine’s concentration drops by 30% each hour.
B. The medicine’s concentration increases by 30% each hour.
C. The medicine’s concentration drops by 70% each hour.
D. The medicine’s concentration increases by 70% each hour

Please be correct

Abilliard ball is struck by a cue. it travels 1 0 0 cm 100cm before ricocheting off a rail and traveling another 1 2 0 cm 120cm into a corner pocket. the angle between the path as the ball approaches the rail and the path after it strikes the rail is 4 5 ∘ 45 ∘ . how far is the corner pocket from where the cue initially struck the ball? do not round during your calculations. round your final answer to the nearest centimeter.

Acoin is tossed 4 times which of the following represents the probability of the coin landing on heads all 4 times

As a salesperson you get $23/ day and $3.60/each sale you make. if you want to make at least $84. in one day, how many sales would need to make? a 15b 16c 17d 18