Answer: 98 + 72w ≥ 530
Explanation:
Hi, to answer this question we have to write an inequality with the information given:
She earns $78 per week (w) babysitting, and she already has $98 in savings.
Mathematically speaking:
78w +98
Where w is the number of weeks.
Since the snowboard costs $530, the expression 78w +98 must be greater or equal than 530.
98 + 72w ≥ 530
Solving:
72w ≥ 530 -98
72w ≥ 432
w ≥ 432/72
w ≥ 6
She needs to babysit at least 6 weeks to buy the snowboard.
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