What is the quadratic regression equation for the data set?, algebra homework help

I need help with my algebra homework there are 27 question but I will not be paying more than $10 please note that these are very easy questions.

「
х
y
2
100
Which equation of the least squares regression line most
closely matches the data set?
4
83
6
50
ŷ = = -0.09x + 11.5
8
35
ŷ = -2.3x + 97.9
10
23
Oỹ = -10.1x + 118.8
Oģ= -0.31x + 37.3
X
y
1990
45
Which equation of the least squares regression line most
closely matches the data set?
Note: The variable x represents the years after 1990.
1992
51
1994
57
1996
61
Oỹ = 2.2x + 13.8
1998
75
O j = 5.5x + 52
Oỹ = 3.5x + 43.8
Oỹ = 3.5x – 43.8
The equation ŷ = 1.2676x + 79.6645 models Fred’s systolic blood pressure, in mm/HG , over his life span, where x is
Fred’s age.
According to the regression equation, what is the approximate systolic blood pressure of Fred at the age of 55?
about 135 mm/HG
about 149 mm/HG
about 159 mm/HG
about 165 mm/HG
In a certain region, the equation ŷ = 19.485x + 86.912 models the amount of a homeowner’s water bill, in dollars,
where x is the number of residents in the home.
What does the slope of the equation represent in context of the situation?
The water bill increases by about $19 every month.
The water bill increases by about $87 for every additional resident in the home.
The water bill increases by about $87 every month.
The water bill increases by about $19 for every additional resident in the home.
For a certain type of injury, the equation ŷ = 4.094x + 6.255 models the number of minutes a patient can walk on a
treadmill, where x is the number of sessions they had since their recovery began.
What does the y-intercept of the equation represent in context of the situation?
Patients are expected to complete 4 training sessions.
Before beginning recovery, patients can walk about 4 min on a treadmill.
Patients are expected to complete 6 training sessions.
Before beginning recovery, patients can walk about 6 min on a treadmill.