phone bill is determined each month by a $16.95 flat fee plus $0.10/min of long distance. The equation y=0.10x+16.96 represents the total monthly cost, for y, for x minutes of long distance.

a. Identify the slope. Interpret the meaning of the slope in the context of this problem.

=0.1. It represents cost per minute.

It tells us the cost required per unit change in time.

b. Identify the y-intercept. Interpret the meaning of the y-intercept in the context of this problem.

=16.96.

It represents fixed rates to be colelcted irrespective of the number of calls in minutes.

c. Use the equation to determine the total cost of 234 min of long distanc.

=0.1*234+16.96.

=$40.36.

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