Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. The X column indicates the number of client contacts last month, and the Y column shows the value of sales ($ thousands) last month for each client sampled.

Number of
Contacts,
X
14
12
20
16
46
Sales,
($ Thousands),
Y
24
14
28
30
80
Number of
Contacts,
X
23
48
50
55
50
Sales,
($ Thousands),
Y
30
90
85
120
110
Determine the regression equation.
Determine the estimated sales if 40 contacts are made.

This belongs over in the homework area. The idea should be for you to work on one problem, learn how to do it, then try to apply it to other similar problems, not to just post all of your problems here at the same time.