Marnie is counting migratory birds that return annually to Smallville, a small residential area. The first year she tags 400 birds. The second year she counts 450 tagged birds over the course of three months.

ok

step-by-step explanation:

12.5 feet

step-by-step explanation:

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