Final answer:
Alexandra's total money spent on music tickets and ride tickets can be expressed as: Total Money Spent = $19 + ($3.50 × t), where t represents the number of ride tickets she purchased.
Step-by-step explanation:
To create the equation representing the relationship between the money Alexandra spent on ride tickets and the number of ride tickets (t) she purchased, we must first account for the fixed cost of the music tickets. Since the music tickets cost her $19 and this is a one-time expense, it is independent of the number of ride tickets purchased. Therefore, the total amount spent will be the sum of the fixed cost ($19) and the variable cost of the ride tickets ($3.50 each).
The equation to represent this relationship would be:
Total Money Spent = Music Ticket Cost + (Ride Ticket Cost × Number of Ride Tickets)
Which translates to:
Total Money Spent = $19 + ($3.50 × t)