That would be the point (3, -1)
Bump for interest will answer in like 2m
The profit is going to be the total amount made, so you are going to subtract $350 - $45 = $305. $305. I hope this helps!
Answer: 
Step-by-step explanation:
Given : Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed and that σ = 4 psi.
A random sample of 8 specimens is tested, and the average breaking strength is found to be 98 psi.
i.e. n= 8 and 
Critical value for 95% confidence = 
Confidence interval for population mean :-

i.e. 



Hence, a 95% two-sided confidence interval on the true mean breaking strength. = 