Nina is saving up to purchase a new phone. The new phone costs $499. Nina received $100 for her birthday and plans to put that towards the new phone. To save the rest of the money, Nina plans to put aside $50 per week until she has saved enough to purchase the phone.

Question

Nina is saving up to purchase a new phone.  The new phone costs $499.  Nina received $100 for her birthday and plans to put that towards the new phone.  To save the rest of the money, Nina plans to put aside $50 per week until she has saved enough to purchase the phone.

Write an equation that represents Nina's savings towards earning her new phone.  Use w to represent the number of weeks.

(1 point)
Responses

100w+50=499
100 w plus 50 is equal to 499

50w−100=499
50 w minus 100 is equal to 499

50w=499
50 w is equal to 499

50w+100=499
50 w plus 100 is equal to 499

GPT-4o mini · Answer

The correct equation that represents Nina's savings towards earning her new phone is:

$50w + 100 = 499$

This equation accounts for the $100 she already has from her birthday (the fixed amount) and the $50 she saves each week (dependent on the number of weeks, $w$) in order to reach the total cost of the phone, which is $499.