B and C cant be it because its not a whole number and it is .4 so it cant go up one making D the only possible choice.
Answer:
First choice
Step-by-step explanation:
The difference quotient in general is
. To get an expression for
, replace x with x + h.
For this question,

Factor
out of the numerator.

Answer: y = 360,000 times t + 4.3%
Step-by-step explanation: