1a. The expression that could be used to show Connor's total cost in terms of \( t \) is:
t + (t x 0.15)
This represents the ticket price plus the 15% tax on the ticket.
1b. If Connor's movie ticket costs $12.60, we can use the expression from part a to find his total cost, which can be calculated as follows:
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First, calculate the amusement tax: \[ \text{Tax} = 0.15 \times 12.60 = 1.89 \]
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Now, add the tax to the ticket price: \[ \text{Total Cost} = 12.60 + 1.89 = 14.49 \]
Thus, Connor's total cost of his movie ticket including the amusement tax is $14.49.