Answer:

Step-by-step explanation:
Let
x----> that month's sales
y----> October earnings
we know that

-----> equation A
-----> equation B
Equate equation A and equation B and solve for x




Answer:
68.26% of the parts will have lengths between 3.8 in. and 4.2 in.
Step-by-step explanation:
The lengths of a lawn mower part are approximately normally distributed

Standard deviation =
We are supposed to find What percentage of the parts will have lengths between 3.8 in. and 4.2 in . i.e. P(3.8<x<4.2)
Formula : 
At x = 3.8

Z=-1
Refer the z table for p value
p value =0.1587
At x =4.2

Z=1
Refer the z table for p value
p value =0.8413
P(3.8<x<4.2)=P(x<4.2)-P(x<3.8)=0.8413-0.1587=0.6826
So, 68.26% of the parts will have lengths between 3.8 in. and 4.2 in.
A number that stands out and isn't close to any other number
Answer:
i'm guessing a positive test result
Step-by-step explanation:
1.5b=11-9
1.5b=2
b=1.3 repeating or 1 1/3