Answer:
(A) The a scatter plot is attached below.
(B) The line of best fit is <em>y</em> = 1149.8 + 53.8 <em>x</em>.
(C) The coupon is responsible for the restaurant's increase in pizza sales on Tuesdays.
(D) The restaurant's sales for the Tuesday of the 15th week is $1,956.80.
Step-by-step explanation:
(A)
The a scatter plot and the line of best fit to represent the data in the table is attached below.
(B)
The total sales for week 4 is, $1,365.
The total sales for week 9 is, $1,634.
Compute the equation for the line of best fit as follows:
Thus, the line of best fit is <em>y</em> = 1149.8 + 53.8 <em>x</em>.
(C)
The slope of the line represents the average rate of change in <em>y</em> with respect to <em>x</em>.
The slope of the line of best for the sales of pizza is 53.8.
The slope is positive.
This implies that the coupon is responsible for the restaurant's increase in pizza sales on Tuesdays.
(D)
Compute the value of <em>y</em> for <em>x</em> = 15 as follows:
Thus, the restaurant's sales for the Tuesday of the 15th week is $1,956.80.