The answer is 4.81x 10^13. By the way your welcome.
A)

B)

C)

D)

You were correct, the exact answer is A. The others do not equal 23 besides that one. Good job!
Answer:
392.1
Step-by-step explanation: just divide and round
The answer is C. f(x) = 0.05
Answer:
34:48
Step-by-step explanation:
adult:child
34:48
simplify: ÷2
17:24