Answer:
I think it would be 40?
Step-by-step explanation:
I think 40 because if I recall correctly, to find the range you must subtract the max from the min, the max being 100 and the min being 60 in this case.
Answer:
Her answer is not reasonable. Her average is 83.
Step-by-step explanation:
Add all of her test grades together (96+82+78+76=332)
To find the average, you need to add all test grades she got and then divide the sum by the total number of numbers added (in this case, we added 4 tests together, so we need to divide by 4)

So she added wrong and forgot to divide by the total number of tests.
Answer:
67766788786686
Step-by-step explanation:
86686868686867
Answer:

Step-by-step explanation:
Ok so we have 2 (congruent) triangles and 3 rectangles.
Your main approach to this problem should be to find the area of each of the faces and adding them up to get to your final answer. Your question makes a point of including the correct unit in your answer. Since this is surface area, the unit would be 
Now let's start:
First, I am going to start with finding the area of the rectangles.

Alright, next lets move on to the triangles.
They are both the same, if you notice. So find one and double it.

now lets add em all
330+60
= 390 and thats your final answer, dont forget to include the unit, ft^2