Joanna worked 5 shifts at a used car lot last week

Joanna worked 5 shifts at a used car lot last week. Joanna earns $200 for any shift she sells 4 or fewer cars and $300 for any shift she sells 5 or more cars. How much did Joanna earn last week working at the used car lot? 1) Joanna sold an average (arithmetic mean) and median of 4 cars per (…)