EMERGENCY! Please give me the correct answer!

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?

Me asap! what is the slope of this line? enter your answer in the box.

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0