Simplify the sum. State any restrictions on the variables. (z-2/z+3)+(10z/z^2-9)

- (2, -7)

- lines r and s and lines t and u must be parallel

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

just pick what you think i need more time let me know if this

step-by-step explanation: