HEL ITS TIMED The data set represents a progression of hourly temperature measurements. Use the regression equation y = negative 0.875 x squared minus 3.596 x + 20.179 to predict the temperature during the sixth hour.
x
0
1
2
3
4
5
y
20
16
10
0
-7
-20

a.
-24
c.
-25
b.
-15
d.
-32

Please select the best answer from the choices provided

A
B
C
D

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

step-by-step explanation: