(a) since we are given that f(8) = 9, the inverse of 9 is simply 8. Therefore, f^-1(9) = 8.
(b) Again, f is the inverse of f^-1, therefore, you simply switch numbers, and you get that f(-3) = -7.
300 minutes equals five hours.
Answer:
Fixed cost $14 -350 messages
variable $ 0.25 each message<u> i think</u>
Step-by-step explanation:
Answer: C
Step-by-step explanation:
the normal distribution is symmetric about its mean.
so answer c) must be true.