30. MODELING WITH MATHEMATICS You earn
$10 per hour working as a manager at a grocery store,
You are required to work at the grocery store at least
8 hours per week. You also teach music lessons for
$15 per hour. You need to earn at least $120 per week,
but you do not want to work more than 20 hours
per week,
a. Write and graph a system of linear inequalities
that represents the situation,
b. Identify and interpreta solution of the system.
e. Use the graph to determine whether you can work
8 hours at the grocery store and teach 1 hour of
music lessons