30 PTS

a. 59
b. 36.9
c. 53.1
d. 30.1

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

a reflection across the x axis and a 90 degree rotation left and right.

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37