Which of the following is a decreasing function?

Question

a. y = 7^x - 2
b. y = 7^-x + 2
c. y = 3(5^x) - 5
d. y = 5(3^x) + 3

What function is the reflection of y = 10^x with respect to the y-axis?
a. y = -10^x
b. y = (-1/10)^x
c. y = 10^-x
d. y = -10^x

Answer 1

1b.