Which function is the inverse of f(x) = b^x?

a. f-1(y) = logby
b. f-1(y) = logxb
c. f-1(y) = logxy
d. f-1(y) = logyb

Given the graph below state whether or not the relation is a function, and give the domain and range.

Which of the following expressions is equal to 2x^2+8

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market