1The cost of a telephone call made through a leased line ser

1.The cost of a telephone call made through a leased line service is 2.5 cents per minute.

A)Write down the linear equation that relates the cost y (in cents) of a call to its length x.

B)Calculate the cost of a call that lasts 23 minutes.

2.Large Data Set 12 lists the golf scores on one round of golf for 75 golfers first using their own original clubs, then using clubs of a new, experimental design (after two months of familiarization with the new clubs). Plot the scatter diagram with golf score using the original clubs as the independent variable (x) and golf score using the new clubs as the dependent variable (y). Comment on the appearance and strength of any linear trend.

http://www.flatworldknowledge.com/sites/all/files/data12.xls

Solution

1)

a)

Y = 2.5*x

B) Y = 2.5*23 = 57.5

for the other question

I can gladly help you but you should post it in a new question