A bird is flying at a height of 40 feet and spots an 8-ft ledge on
which to perch. If the top of the
ledge is at a 22° angle of
depression from the bird, how far
must the bird fly before it can
land? (Careful!)

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

n=1.75+1.75

step-by-step explanation:

3.5/2=1.75