Here is your first open-ended item. Make sure you "explain how you know" how to solve the problem. Remember, to explain means to to give the meaning of something: give facts and details that make the idea easy to understand.
Question.
The cost of a long distance phone call to Africa is given by the function below where t is time in minutes. C(t) = 1.84 + 0.58t
a. How much will a phone call that last 15 minutes 30 seconds cost? Explain how you know.
b. If the cost of phone call is $5.32, what is the length of the phone call in minutes? Explain how you know.
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Cost Per Call Question
ReplyDeleteQuestion.The cost of a long distance phone call to Africa is given by the function below where t is time in minutes. C(t) = 1.84 + 0.58t
A. How much will a phone call that last 15 minutes 30 seconds cost? Explain how you know.
B. If the cost of phone call is $5.32, what is the length of the phone call in minutes? Explain how you know.
Answer (A)I converted 15.5 to the (t) for the time he talked on the phone. I got an answer of $10.83 by adding $1.84 for the initial charge, the i multiplied $0.58x15.5 to get the charge. Then I added the initial charge $1.84 to the $8.99 and got a total coast for the phone call of $10.83
Answer(B) I subtracted $1.84 for the initial charge and ended up with $3.48, I then divided that by $0.58 for the coast per minute to get a total of 6 minutes.
John Kennedy 2B