Show that f(x)=πx-2 and f-1(x)=(x+2/π) are inverse functions of one another

Miguel bought a movie ticket that cost $5. he also bought popcorn and a bottle of water. how much did miguel spend altogether?

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?