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A new gaming chair costs $309.99. You have already saved $131.49 and earn $25.50 each week babysitting. Write and solve an equation to determine how many weeks, w, you must babysit to earn enough money to buy the new gaming chair.

25.5w − 131.49 = 309.99; w = 17
25.5 + 131.49w = 309.99; w = 7
25.5w − 309.99 = 131.49; w = 17
25.5w + 131.49 = 309.99; w = 7

Respuesta :

mhanifa

Answer:

  • 25.5w + 131.49 = 309.99; w = 7

--------------------------

Given:

  • Total amount needed is $309.99.
  • Already saved = $131.49,
  • Saved every week = $25.50,
  • Number of weeks = w.

You can save $25.50w in w weeks and already have $131.49, the total amount required is $309.99.

This is translated to equation:

  • 25.5w + 131.49 = 309.99

Solve it to get:

  • 25.5w = 309.99 - 131.49
  • 25.5w = 178.5
  • w = 178.5/25.5
  • w = 7

Correct choice is D.

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