Question

Ellie is saving to buy a phone. She wants to have at least $299 saved before buying one. She currently has $213 saved, and she receives $10 a week as an allowance from her parents. After how many weeks will Ellie have enough money saved? Ellie writes the inequality 10w+213≥299
, where w is the number of weeks, to help figure this out. Solve her inequality.(1 point)
Responses

w≥51.2

w greater than or equal to 51.2

w≥860

w greater than or equal to 860

w≥8.6

w greater than or equal to 8.6

w≥86

w greater than or equal to 86
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Answer 1

Solve 10w + 213 ≥ 299:
10w ≥ 86
w ≥ 8.6

So the correct choice is w ≥ 8.6. Since weeks are whole, Ellie will need 9 weeks.