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 plus 100 is equal to 499

50w−100=499

Answer 1

To represent Nina's savings towards earning her new phone, we need to consider her initial amount and her weekly savings.

Nina starts with $100 from her birthday and plans to save $50 each week. Let \( w \) represent the number of weeks she saves. Therefore, her total savings can be expressed as:

\[ 50w + 100 \]

Since she needs to save a total of $499 for the phone, we set up the equation:

\[ 50w + 100 = 499 \]

So the correct response is:

50w + 100 = 499.