Simplify. 20 - (- 2) to the second power ÷ ( 7 - 9) × 13
A. 46
B. -104
C. 286
D. 262/13

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

hd extra 3-7 x d en is the answer