Question

Bryan has a prepaid cell phone with a balance of $75. He is charged the same rate per minute. Which function represents the balance on the phone after (n) minutes?

Answer 1

The function that represents the balance on the phone after (n) minutes can be expressed as: Balance = Initial Balance - Rate * n. If Bryan has a prepaid cell phone with a balance of $75 and he is charged the same rate per minute, the initial balance would be $75 and the rate would be a constant value. For example, if n = 10 minutes, the balance would be: Balance = $75 - $0.10 * 10 = $75 - $1 = $74.

Step-by-step explanation:

The function that represents the balance on the phone after (n) minutes can be expressed as:

Balance = Initial Balance - Rate * n

Since Bryan has a prepaid cell phone with a balance of $75 and he is charged the same rate per minute, the initial balance would be $75 and the rate would be a constant value. Let's say the rate is $0.10 per minute, then the function becomes:

Balance = $75 - $0.10 * n

For example, if n = 10 minutes, the balance would be:

Balance = $75 - $0.10 * 10 = $75 - $1 = $74