ariel is saving money for a new computer that costs $650. she has $150, which she puts into an account. then she adds $25 each week. How many weeks will it take before she can buy the computer?
The initial equation is 25x+150=650. Since she already has 150, we can subtract that from the total to get 500. We now have that 25x=500. Divide by 25 on both sides to get 20 weeks
