Answer:
75:45
Step-by-step explanation:
3*15=45
5*15=45
Cx-4=7
cx=11
x=11/c
Use inverse operations to isolate x on one side of the equation.
Answer: -0.36
Step-by-step explanation:
Given: Mean : 
Standard deviation : 
We know that the formula to calculate the z-score is given by :-
For x=8.2 minutes, we have
Hence, the z-score for this amount of advertising time = -0.36
Answer: C
Step-by-step explanation: With inverse equations, you switch y and x (y=f(x)) and undo/reverse the steps towards x.
1. Multiply by 3
2. Add 2
Equation by itself
0. x
1. 3(x)
2. 3(x+2)
C
Step-by-step explanation:
In my opinion by looking at the photograph I think its 6 in my opinion sorry if I'm wrong
