I’m not exactly sure how to calculate the grade, but this is what I’ve done below. Hope it helps!
8.

9.
The sum of two sides must be greater than the third side.
It can't be 5 because

.
It can't be 7 because

.
It can't be 17 because

.
So it's 12.
10.
a. Turk, McAllister
b. Market, Mission, Howard
c. not sure about this one
Answer:
Eve used scale as 2 yards is equal to 1 inch.
Step-by-step explanation:
Given:
Actual Picnic area = 68 yards.
Drawing Picnic area = 34 inches.
We need to find the scale used by Eve.
Solution:
Now we can say that;
scale used by Eve can be calculated by dividing Actual Picnic area from drawing picnic area.
framing in equation form we get;
scale used by Eve = 
Hence Eve used scale as 2 yards is equal to 1 inch.
<span> answer is 2: 1 x 10^2 –days.
I hope this helps!</span>