Answer:
it shows that it's B
the gray check mark
I do't know how to solve this.
Step-by-step explanation:
144
f(4)=3*4^2
f(4)=12^2
12*12=144
(5.91×10^−3)⋅(8.7×10^10)
= (5.91 x 8.7) x 10^(- 3 + 10)
= 51.417 x 10^7
= 5.1417 x 10^8
Answer is
B. 5.1417 × 10^8
