Suri saved $150 of her paycheck the first week she worked and $50 of her paycheck each week after the first week. How many weeks did it take Suri to save a total of $1,000?
150 + 50N = 1000 where N is the number of weeks we are seeking
Subtract 150 from both sides
50N = 850 divide both sides by 50
N = 17 weeks
