You have the following information:
- Kendra earns $6 per hour she babysit.
- Kendra has already $50.
- Kendra wants to buy a phone of $350
In order to determine the equation that represents how many hours Kendra needs to complete $350, name the number of hours she babysit as h. Then, for h hours of work she earns 6h dollars.
The total money Kendra will have for h hours will be 50 + 6h, and she needs to have $350.
Hence, you have the following equation:
6h + 50 = 350
To determine how many hours she needs to work, you solve the previous equation for h:
6h + 50 = 350 subtract both sides by 50
6h = 350 - 50
6h = 300 divide by 6 both sides
h = 300/6
h = 50
Hence, she needs to work 50 hours to have $350
Answer: 6h + 50 = 350; 50 hours