Answer:
x = 17
Step-by-step explanation:
Answer:
56,161
Step-by-step Thought Process:
Use the equation:
to solve this problem. Let x= time in years, a= initial amount, and r= growth rate.
= 
When you solve you get this number:
56,160.57516085
Round to the nearest whole number:
56,161
C is the answer ..........
discriminant= b^2-4ac= (-2)^2-4(4)(9)= -140<0
since discriminant <0, graph is always positive, x has no real roots