It shows the distance between him and the coach getting the “motion” of his running time. It’s like the circle with the line in the middle...
Answer:
I got x = -1739
but I put both of the 43 in fraction form so hope this helped
A. is the answer look at the attached photo
Answer:
a) For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71
b) 
We can see the value of 76 labeled in the second picture attached
c) 
And using the z score we have this using the normal standard table or excel:

d) 
We can say that about 154 and 155 students scored higher than Angelica
Step-by-step explanation:
We know that X represent the random variable scores of knowledge test and is given by:

Part a
For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71
Part b
For this case the z score is given by:

And replacing we got:

We can see the value of 76 labeled in the second picture attached
Part c
We want this probability:

And using the z score we have this using the normal standard table or excel:

Part d
For this case we can find the number desired like this:

We can say that about 154 and 155 students scored higher than Angelica
So first we would get the scale to the same units. So we would take 1in:1.5ft and convert the feet to inches. 1.5 x 12 = 18
So the scale of the model is 1:18
now just multiply 7 by 18 to get-
126 inches, or 10.5 feet