Answer:
The equation which represents the function is given by,
x = 3y .
Step-by-step explanation:
The direct variation function contains the points, (-9, -3) and (-12, -4).
Here,
= 3
So, the equation which represents the function is given by,
x = 3y .
Answer:
Step-by-step explanation:
Let be the average of the sample, and the population mean will be
We know that:
gr
Let be the standard deviation and n the sample size, then we know that the standard error of the sample is:
Where
In this case we are looking for:
This is:
or
Now we get the z score
Looking at the tables for the standard nominal distribution we get
we are given
where
x is number of hours
f(x) is dollars he charges
The charges will be lowest when absolute value will become 0
so, we can set value inside absolute function equals to 0
and then we can solve for x
............Answer