$3000 in five years. 4% intrest compounded 4 times a year . how much money should tracy deposit?

Going by the attached formula:
(where 'n' is the number of compounding periods per year)
Principal = Total / (1 + rate / n)^ n*years
Principal = 3,000 / (1 + .04 / 4) ^ 4 * 5
Principal = 3,000 / (1.01) ^ 20
Principal = 3,000 / 1.2201900399
Principal = 2,458.63

step-by-step explanation:

we see from the table that for increase of 10 units in x, there is an increase of 80 units in y

hence slope of line is 8

when x=0, y =120 that is c =120

hence regression line has equation

y = 8x+120

since all points lie on the regression line, the linear relationship is perfect and hence correlation is strong.

so correlation is +1 since there is a positive increase in y.

parta:   yes,   there is a perfect linear positive strong correlation between the number of employees in the plant and the number of products produced monthly

(the slope is positive 8)

part b:   y = 8x+120

part c:   slope indicates the rate of change of y for a unit change in x.

y intercept is the y value for x=0