Answer:
Jenna will have had to babysit for 9 weeks to have saved enough money to buy the boots.
Step-by-step explanation:
Because Jenna earns $12 per week babysitting, you'd multiply her earnings each week by each number of weeks: 12 x 9 = 108.
If you try 12 x 8, you get 96, which isn't enough to buy the boots. Therefore, Jenna would have had to work 9 weeks to be able to afford the boots and have some money leftover.
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