The volume (in cubic feet) of a black cherry tree can be modeled by the equation y = 50.9 + 0.3x1 + 5.3x2
where x1, is the tree's height (in feet) and x2, is the tree's diameter (in inches). Use the multiple regression equation to predict the y-values for the values of the independent variables.
a) x1 = 72, x2 = 8.9.
b) x1 = 67, x2 = 10.6.
c) x1 = 84, x2 = 16.3.
d) x1 = 90, x2 = 20.8.
The predicted volume is.

119.67 ; 127.18 ; 162.49 ; 188.14

Step-by-step explanation:

Given the regression equation:

y = 50.9 + 0.3x1 + 5.3x2

Where :

x1, is the tree's height (in feet) and x2, is the tree's diameter (in inches)

A) x1 = 72, x2 = 8.9

y = 50.9 + 0.3(72) + 5.3(8.9)

y = 50.9 + 21.6 + 47.17

y = 119.67

B) x1 = 67, x2 = 10.6

y = 50.9 + 0.3(67) + 5.3(10.6)

y = 50.9 + 20.1 + 56.18

y = 127.18

C) x1 = 84, x2 = 16.3

y = 50.9 + 0.3(84) + 5.3(16.3)

y = 50.9 + 25.2 + 86.39

y = 162.49

D.) x1 = 90, x2 = 20.8

y = 50.9 + 0.3(90) + 5.3(20.8)

y = 50.9 + 27 + 110.24

y = 188.14

d

step-by-step explanation:

d

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.