The inverse of a function is a function. True or False

Step-by-step explanation:

The inverse of a function may not always be a function! The original function must be a one-to-one function to guarantee that its inverse will also be a function.

If the graph does not pass the Horizontal Line Test, then the graphed function's inverse will not itself be a function

Step-by-step explanation:

If the boy initially had 20 cents, then the total number of cents he will have left after purchasing pencils is equal to the total cost of the pencils subtracted from 20. The total cost of pencils, in cents, is equal to , since each pencil is 3 cents.

Therefore, the total amount, in cents, that the boy has left, , is equal to :

The domain of this function is or all real numbers .