Answer:
Your expression would be 45h+75
Your answer to the solution would be 232.5 or 232 and 1/2
Explanation:
You find the equation by using the knowledge that the first half hour is 75 and the other additional half hours are 45
therefore you get 45h+75 because its 45 times whatever the number of half hours is so then
plug in 3 1/2 for h and you get 45(3 1/2) +75= 232 1/2
232 1/2 is the same as 232.5