Answer:
7 units
Step-by-step explanation:

=7
Step-by-step explanation:



First One! All you have to do is count the example and see if there is a match!
I hope this helps you
x=4
f (4)=4+3
f (4)=7
x= -2
g (-2)=13. (-2)-5
g (-2)= -26-5
g (-2)= -31
f (4)+g (-2)= 7 -31= -24
Answer:
21, 144, 12
Step-by-step explanation:
Given that a sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4.
Let X be the distance in yard.
i.e. each entry of x is multiplied by 3.
New mean variance std devition would be
E(3x) = 
Var (3x) = 
Std dev (3x) = 
Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9