The cost of a long-distance telephone call is given by the function below, where m is the length of the call in minutes.

C (m) = 0.1m + 1

Determine how long a phone call can be made for $5.50.

A. 40 minutes

B. 90 minutes

C. 45 minutes

D. 50 minutes

Question

Mathematics

Helena Cisneros

28 July, 01:13

The cost of a long-distance telephone call is given by the function below, where m is the length of the call in minutes.

C (m) = 0.1m + 1

Determine how long a phone call can be made for $5.50.

A. 40 minutes

B. 90 minutes

C. 45 minutes

D. 50 minutes

+5

Answers (1)

Know the Answer?

Miya Norton · Answer 1

answer

45 minutes

explanation

using the equation C (m) = 0.1m + 1, C (m) is the cost of the phone call (5.50)

5.50 = 0.1m + 1 subtract 1 from both sides

4.5 = 0.1m divide both sides by 0.1

45 = m

m is the number of minutes, so 45 minutes

The cost of a long-distance telephone call is given by the function below, where m is the length of the call in minutes.C (m) = 0.1m + 1Determine how long a phone call can be made for $5.50.A. 40 minutesB. 90 minutesC. 45 minutesD. 50 minutes

The cost of a long-distance telephone call is given by the function below, where m is the length of the call in minutes.

C (m) = 0.1m + 1

Determine how long a phone call can be made for $5.50.

A. 40 minutes

B. 90 minutes

C. 45 minutes

D. 50 minutes