At least squares regression line is f(x) = -3.19x + 123.63 and r^2 = 0.59 The strength of the direction is:

A. Very weak

B. Moderately weak

C. Very strong

D. Moderately strong

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

a ≈ 172.05

step-by-step explanation:

the pictures.