Iwill give 15 points can somosn at least answer 2 questions or 3 you i'm quite stressed any ?

8) 4 3/8 or 4.375

10) 4/15 or 0.266

12) 0

Step-by-step explanation:

For #12 when you subtract their the same fraction so it will be zero.

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