Answer:

Explanation:
As per the statement:
Product A:
f(x) = 400(1.08)^x
Product B:
g(x) = 320x
We have to write function h(x) representing the difference in the number of units sold for product A and the number of units sold for product B.
h(x) = The difference in the number of units sold for product A and the number of units sold for product B
⇒

Substitute the given values we have;

where,
x represents the number of months the products have been on the market.