julio checked the temperature of a bag of frozen peas and found it was at −13°c. after he left the bag out of the freezer for an hour, its temperature rose to 8°c. what was the change in temperature in an hour?
a)−21°c
b)21°c
c)5°c
d)−5°c

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

3

step-by-step explanation: