Question

penelope is going to the carnival. it costs $20 to get into the carnival and ride tickets are $0.50 each. which expression shows the total amount penelope will spend at the carnival if she purchases ( r ) tickets for the rides?
( 0.50r )
( 20 div 0.50r )
( 20 +.50r )
( 20 -.50r )

Explanation:

Step1: Identify fixed and variable costs

The fixed cost to enter the carnival is $20. The variable cost is for ride tickets, which is $0.50 per ticket. If she buys \( r \) tickets, the cost for tickets is \( 0.50r \).

Step2: Calculate total cost

Total cost is the sum of fixed cost and variable cost. So total amount spent is \( 20 + 0.50r \).

Answer:

\( 20 +.50r \) (the option with this expression)