All Answer in Mathematics Pre test 1.B 2.B 3. C 4.D 5.A 6.A 7.C 8.C 9.B 10. D Post test 1.C 2. B 3.D 4.D 5.C 6.A 7.B 8.C 9.A 10.B

if i put something wrong your not gonna like it so rather not say nothing.

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

you have to find the same variables -3n - 5n so this would be -3n +(-5n) which equals -9n

its c