Zhang Lei creates and sells wreaths. On her website, she gives the diameter, in inches, and weight, in pounds, of

each wreath. An approximate least-squares regression line was used to predict the weight from a given

diameter.

Weight (pounds)

16

20

24

28

32

36

40

Diameter of wreath (inches)

Interpret the residual for the wreath indicated in the scatterplot above.

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

the furthest the dog can be is 508 meters away from the house, and the closest he can be is 492 meters away from the house.

correct answer was 0.5