Answer:
Cost of tickets: $7. Equation: 40 = 4x + 12.
Explanation:
4*t +12 = 40
Each ticket cost 7 dollars
tickets + popcorn = total cost
Subtract 12 from each side
4t +12-12 = 40-12
4t = 28
Divide by 4
4t/4 = 28/4
t = 7
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