Answer:
Because Elena receives a higher value per hour, she earns $16.8 more than Jada.
Explanation:
Giving the following information:
Elena:
y=8.40x
Jada:
y= 7x
We need to calculate the total income for 12 hours:
Elena:
y=8.40*12
y= $100.8
Jada:
y= 7*12
y= $84
Because Elena receives a higher value per hour, she earns $16.8 more than Jada.