Answer:
19 situps
Step-by-step explanation:
Given that the regression equation to find a a relationship between hours of TV watched per day (x) and number of situps a person can do (y) was done.
The result was
y = ax+b

Correlation coefficient = 0.865
To predict the number of situps a person who watches 3 hours of TV
y = -1.23(3)+22.738
= 19.048
Approximately 19 situps.
I think it is B
Hope my answer help you?
Answer:
The graph of his initial step in the attached figure
Step-by-step explanation:
we have

This is a exponential function of the form

where
a is the initial value
b is the base
r is the rate of change
In this problem
a=3 ---> the initial value ( value of the function when the value of x is equal to zero)
b=4
b=1+r ----> 4=1+r ----> r=3 ---> r=300%
therefore
The initial value is the point (0,3)
The graph of his initial step in the attached figure
Step-by-step explanation:
9,6,12,13,9,8,13,14,h, k
mode = 9, so the h could be 9.
=> the set of data :
6,8,9,9,9,k,12,13,13,14
median = 10 , so (9+k) /2 = 10
9+k = 20
k = 20-9
k = 11
the correct answer :
h = 9 and k = 11