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

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

(1 point)
Responses

50w=499
50 w is equal to 499

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

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

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

Answer 1

To find the amount Nina has saved after \( w \) weeks, we start with the $100 she received for her birthday and add the amount she saves each week, which is $50 multiplied by the number of weeks \( w \). Therefore, the total savings equation is:

\[ 50w + 100 = 499 \]

So, the correct response is:

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