Production costs will only allow for two video advertisements to be developed. Which two videos would you recommend for development? Explain your recommendations.

$465

Step-by-step explanation:

Given expression: , where  h is the number of hours worked and f is the number of fixtures installed.

To find total charges (in dollars) when he works 7 hours and installs 9 fixtures, substitute h=7 and f=9 in the given expression, we get

Therefore, Ben Frank charges $465 when he works 7 hours and installs 9 fixtures.