Answer: C. 17
Step-by-step explanation:
Given : An investment is currently worth [tex]2.125\times10^4[/tex] dollars . Ten years ago, the investment was worth [tex]1.25\times10^3[/tex] dollars.
Then, the number of times the value of the investment today is greater than the value of the investment ten years ago is given by :-
[tex]\dfrac{\text{Current investment}}{\text{\text{Yen years ago investment}}}\\\\=\dfrac{2.125\times10^4}{1.25\times10^3}\\\\=\dfrac{2.125}{1.25}\times10^{4-3}\ \ [\because a^m\times a^n=a^{m+n}]\\\\=1.7\times10=17[/tex]
Hence, the value of the investment today is 17 times greater than the value of the investment ten years ago .
