Please help, the answer i have picked is just a guess btw​

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?

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585