Your aunt works at a factory when they need extra help. She makes $8 per hour on first shift, $9 per hour on second shift, and $10 per
hour on third shift.
a. Do the ordered pairs (hours worked, earnings) represent a function for
all possible values? Explain.
b. Do the ordered pairs (earnings, hours worked) represent a function for
all possible values? Explain.
c. Explain a way you could divide the ordered pairs in part (a) into three sets
that are functions.