The scatterplot below shows the number of hours of sleep that 4 teenagers got before taking the SAT and the average response time in seconds it took for those teens to answer each question.

Using the equation of the line of best fit, how many hours of sleep would you expect a teen to get to have a response time of 46 seconds?
A 7.25 hours
B 9.31 hours
C 13 hours
D 60.76 hours

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.

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 -

1st part is 64,000,000

2nd part 500,000

step-by-step explanation:

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically