43/5 -2 1/3 what is 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?

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)