Question

Elena and Jada each make money by helping out their neighbors.

Elena babysits. Her earnings are given by the equation y=8.40x, where x represents how many hours she works and y represents how much money she earns.
Jada earns $7 per hour mowing her neighbors’ lawns.
Who makes more money after working 12 hours? How much more do they make? Explain how you know.

Answer 1

Elena earns $100.80 by babysitting for 12 hours, while Jada earns $84 by mowing lawns for the same amount of time. Elena makes $16.80 more than Jada after working 12 hours.

Step-by-step explanation:

The question asks us to compare the earnings of Elena and Jada after they have each worked for 12 hours. Elena earns money by babysitting and her earnings are described by the equation y=8.40x, where x represents the hours she works and y represents her earnings. To calculate Elena's earnings for 12 hours, we substitute 12 for x:

Elena's earnings: y = 8.40 × 12
y = $100.80

Jada earns $7 per hour mowing lawns. Jada's earnings for 12 hours: 7 × 12 = $84

By comparing the amounts, we can see that Elena earns more than Jada after working 12 hours. The difference in their earnings is:

Difference: $100.80 - $84 = $16.80

Elena earns $16.80 more than Jada after working for 12 hours.