Final answer:
To calculate the total ticket cost for a family, round the ticket prices to the nearest dollar and use the expression ($40 × number of adults) + ($30 × number of children). A family with one adult and four children will pay more than a family with three adults and one child.
Step-by-step explanation:
The question involves rounding numbers and creating an expression to calculate the total ticket cost for a family attending an amusement park based on the number of adults and children.
Part A:
Rounded to the nearest dollar, the child's ticket is $30 and the adult's ticket is $40. The expression for the total ticket cost for A adults and C children would be:
Total Ticket Cost = ($40 × A) + ($30 × C)
Part B:
For one adult and four children, the total cost is ($40 × 1) + ($30 × 4) = $40 + $120 = $160.
For three adults and one child, the total cost is ($40 × 3) + ($30 × 1) = $120 + $30 = $150.
Thus, a family with one adult and four children would pay more.