X2 + 2x - 3= 5 (x - 1)(x + 3) = 5
x-1= 5 or x + 3 = 5
x= 6 or x = 2
Describe the error

The salesperson earns a 5% commission on the first $5,000 she has in sales. the salesperson earns a 7.5% commission on the amount of her sales that are greater than $5,000. this month the sales person had $8,000 in sales. what amount of commission, in dollars, did she earn?