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The function below can be used to calculate the cost of surfing the internet, f(m), which is based on a $10 initial charge and a fee of $.15 per minute, m, till you sign off. f(m)=10+0.15m If Jon paid $40, how many minutes did he use the internet? Select one: A. 200 B. 267 C. 150 D. 50

Answer :

Option A

Number of minutes internet is being used is 200 minutes

Solution:

Given that,

The function below can be used to calculate the cost of surfing the internet, f(m) is given as:

f(m) = 10 + 0.15m

Where f(m) is the total cost of surfing the internet

10 denotes the initial charge

m is the number of minutes internet is being used

To find: If Jon paid $ 40 we have to find number of minutes internet is being used

Substitute f(m) = 40 in given function

40 = 10 + 0.15m

0.15m = 40 - 10

0.15m = 30

m = 200

Thus number of minutes internet is being used is 200 minutes

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