To write an equation representing the total cost $C$ (in dollars) for using a computer for $t$ minutes at the internet cafe, we need to account for both the initial charge and the per-minute charge.

• Initial charge: $3
• Charge per minute: $0.60 per minute

The total cost $C$ is the sum of the initial charge and the product of the time $t$ and the per-minute charge. Therefore, the equation is:

$C = 3 + 0.60t$

where:

• $C$ is the total cost in dollars,
• $t$ is the number of minutes.

Would you like further details or have any questions?

Related questions:

1. How much would it cost to use the computer for 10 minutes?
2. If Aiden has $10, how many minutes can he use the computer for?
3. What happens to the total cost if the per-minute charge increases to $0.75?
4. How would the equation change if the initial charge was $5 instead of $3?
5. What is the total cost if Aiden uses the computer for 0 minutes?

Tip:

Always identify both fixed and variable costs in problems involving charges to create accurate cost models.