The function and the first value stated for x are confusing.
Doing some research, I found that the problem is to evaluate the function

for x = - 1 and x 2.
The solution is:
1) For x = - 1

2) For x = 2
Answer:
Step-by-step explanation:
7-x=-2
-x=-2-7
-x=-9
x=9
Answer:
B.) 83.7758
Step-by-step explanation:
Answer:
t=10
Step-by-step explanation:
3t + 15 = 45
3t = 30
t = 10