Answer:
I think its either C or D but im not very sure.
Step-by-step explanation:
The answer is 4/1 you just have to divide 7 from both numbers and then you will get 4/1
Answer:
Step-by-step explanation:Since we want to know how much time elapsed since the object was launched until it ht the ground. At the ground, the height is 0.
Therefore the equation h(t) = 80t – 16t2 becomes 0= 80t – 16t2
Solving the equation for t gives 80t =16t2 or 16t=80 or t=5sec
The object hits the ground 5 seconds after it is launched.
It will take 45 weeks.25 weeks to gain back the 500 dollor he spent and 20 to make 400 dollor from it
