Answer:
a
Step-by-step explanation:
T=[log(6000/2925.9)/log(1+0.039/2)]/2
T=18.6 years
18 years and 6 months
Something wrong with your options
Answer:
Since:
a^2-2ab+b^2 = (a-b)^2
and
a^2+2ab+b^2 = (a+b)^2
We need to find value of * which is 2ab
In your equation = 
The name that gives the most info is Rhombus