Answer:
b=7
Step-by-step explanation:
A=bh/2
28=8b/2
56=8b
b=7
B is the correct answer to this question
Answer:

Step-by-step explanation:
From the question we are told that:
Sample mean 1 
Sample mean 1 
Sample standard deviation 1 
Sample standard deviation 1 
Generally the equation for Point estimate is mathematically given by



here's the right answer!
A) 76 + 80 + 78 + x = 82 times 4
234 + x = 328
x = 94
B) Mei needs a score of at least 94 on the next exam.
hope you have a good day
525/2 is the answer to your question. which may be a little bit of a larger fraction than normal