Answer:

Step-by-step explanation:
Given expression:














Answer: -1
Step-by-step explanation:
Answer: C.
Step-by-step explanation: You add all the numbers in A, B, C. Then look at which one has the lowest value.
A. is .97
B. is 1.01
C. . is .91
D. is .94
So C. has the lowest value
H=-16t^2+56t+1, the airplane is shot up from a platform 1 foot above the ground, so 1= - 16t^2+56t+1, we solve this equation
(- 16t+56)t=0, (- 16t+56)=0 or t=o, - 16t+56=0, implies t =3.5s
so the answer is C)3.5 seconds