Your answer is 6%
because 6% =0.06 x 750 =45
45x 5 (years)=225
5×21/-1+9
105/-1 +9
-105 +9
-96
hope that helps
Answer:
A
Step-by-step explanation:
A is the answer
Answer:15
Step-by-step explanation:
Given
Craftsman sell 10 Jewelry set for $500 each
For each additional set he will decrease the price by $ 25
Suppose he sells n set over 10 set
Earning
Earning 

differentiate to get the maximum value

Equate
to get maximum value



Thus must sell 5 extra set to maximize its earnings.