Question

2. You have just signed an annual contract with TELUS for a cell phone. The base rate is $22 per month and $0.44 per minute. There are no free minutes included with this contract.
a) Write a linear equation in which y represents the total cost for the cell phone per month and x represents the number of minutes spend on the phone each month.

Answer 1

As per the contract the base rate of the connection is $22.00 per month and calling rate through that phone is $0.44 per minute.

Here, $y$ represents the total cost for the cell phone per month and $x$ represents the number of minutes spend on the phone call each month.

Now, if we have spent $x$ minutes over the phone call over the period of a month, then the total cost we need to pay for the phone calls is given by:

$0.44 \times x=0.44x$, since it costs $0.44 for each minute of phone call.

And in addition to the cost of phone calls he needs to pay a base rate of $22.00.

So, the linear equation that represents the total cost is given by:

$y=0.44x+22$