Write each expression with fewer terms

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2