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BUSI-195U: Fall 2013 - Assignment #2

Question [5 marks]

Solution:

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Question [5 marks]

The cost of internet access at a caf is $15 for the first 30 minutes, and $2 per

minute for each additional minute. Write a function describing the cost of the

service as a function of minutes used online.

Solution

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Question [5 marks]

The total number of email messages per day (in billions) between 2003 and

2007 is approximated by

f( t) = 1.5t2+ 7.1t + 31.4

where t is measured in years and t = 0 corresponds to 2003. Over the same

period, the total number of spam messages per day (in billions) is approximated

by

g(t) = 1.21t2+ 6t + 14.5

a) Find the function D = f g. Compute D(4) and explain what it means.

b) Find the function P = f/g. Then Compute P(4) and explain what it means.

Solution:

8/13/2019 Fall 2013 - Assignment 2

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Question [5 marks]

Solution:

8/13/2019 Fall 2013 - Assignment 2

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Question [5 marks]

At $10 per ticket, the owner of Rogers Centre will fill all 8000 seats. They also

know that for every $1 increase in the price, 500 seats will go unsold. Write the

number of tickets sold, n, as a function of the ticket price p.Also, identify the

domain of the function.

Solution:

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