Replace the question mark (?) with to make the equation true. (m-n)/(m^(2)-n^(2))(?)/((m-1)(m-n)) =(2m)/(m^(2)-n^(2))

Answers
A) m+n
B) 0
C) m-1
D) -(m+n)

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?

Find x to the nearest hundredth place

What is the sum of these mixed numbers 2 1/8 + 4 3/8