Answer:
Part (A) Total Cost = "7 + 5x + 4y + 2z" dollars
Part (B) $43
Step-by-step explanation:
Part A)
Ticket cost given as $7
Then,
5 hotdogs for x dollar each cost
"5x"
Then,
4 box of popcorn at y dollar per box, cost is:
"4y"
Then,
2 pretzels each z dollar, cost is:
"2z"
The total cost is the sum hence,
Total Cost = "7 + 5x + 4y + 2z" dollars
Part B)
Since we now know the cost of hotdogs, popcorn and pretzels, we can find the exact dollar value of total cost.
The expression for total cost was:
7 + 5x + 4y + 2z
Now, it is given
x = 4
y = 3
z = 2
So, we have:
Total Cost = 7 + 5(4) + 4(3) + 2(2) = 7 + 20 + 12 + 4 = $43