Answer: B or D
Step-by-step explanation:
Answer: 0.4207
Step-by-step explanation:
Let
be the sample mean area.
Given: Population mean :
sq. feet
Standard deviation:
sq. feet
Sample size : n= 10
The probability that the sample mean area is
or less if the manufacturer’s claim is true.

Required probability = 0.4207
Answer: First Option
Walter needs to make at least 5 more cookies but no more than 40

Step-by-step explanation:
If we call x the number of cookies that Walter needs to make, then we know that the amount of cookies will be:

Then this amount must be greater than or equal to 20 and must be less than or equal to 55 then.
and 
This is:

We solve the inequality for x.

Then the amount of cookies that Walter must make must be greater than or equal to 5 and less than or equal to 40
oh i just watched a vid for that lol. That question was on it.. here <3
https://www.you tube.com/watch?v=dQw4w9WgXcQ
Answer:
I'm pretty sure you have to do slope intercept form so it would be like this.
Y= mx+b
M is 1/2 and the X is given in the ordered pairs. Y is also given but it counts as the intercept so it is actually the 'B' of the equation. YOu just have to fill it in.
Y= 1/2(-4) + 2