Answer:
B.
Step-by-step explanation:
If each ticket costs $10 and each popcorn costs $5, with x = number of tickets and y = number of popcorn and $3 the service we have
10x+5y+3 = total cost.
Now, he has a total of $75 and he buys 4 tickets so
10(4)+5y+3 = 75
40+5y+3 = 75
43+5y=75
5y = 75-43
5y = 32
y = 32/5 = 6.4 ≈ 6 popcorn.
Then, he can buy 6 popcorns. Now, to find the inequality we need to know that if he has $75, the total cost can't exceed $75, that is, the total cost needs to be less or equal to $75.
10x+5y+3 ≤75.