Nandy was asked to evaluate cos 19
12
so she showed the following
work:
Line 1: cos (195) = cos(+3)
(6)
Line 2: cos
57
4
+ cos
Line 3:
1
+
2
2
Line 4: -V2+1
Nandy made a mistake in her work above.
a.) What line did the mistake occur? Justify your answer. (5 points)
b.) What is the correct answer? Leave answers as exact values. WORK
DOES NOT NEED TO BE SHOWN. (5 points)

ion

step-by-step explanation:

ion ion ion ion ion ion ion ion ion ion ion

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