Let

, so that

,

, and

. Then

Now let

, so that

. Then

Transform back to

to get

and again to get back a result in terms of

.
Answer:
Neither function A nor function B has an x-intercept.
Step-by-step explanation:
Function A has a y-intercept at (0, 5).
Function B is defined for negative numbers as well as positive numbers, but not for x=0.
These observations eliminate all answer choices but the first one.
Step-by-step explanation:
* 1,653 x 4 = 6612
* 1,653 x 13 = 21489
* 1,653 x 1 1/2 = 2479.5
I hope it helps.