Janis is saving money to buy a guitar that cost $420. She already has $150.00 saved and can earn the rest of the money by dog walking for 30 days. If d represents how much she earns for dog walking each day, which of the following equations can be solved to find how much Janis is paid each day for dog walking?

420 + 150 = 30d
420 – d = 150
420 = 30d + 150
420 = 30d – 150

1 answer

420 = 30d + 150