With which question?? All I see is that caption
For all of these answers, the equation used was (AB + CD)/2 = EF
1.12+24=36 36/2=18
2. 21 + 35 = 56 56/2 = 28
3. (7 + EF)/2 = 9
multiply by 2
7 + EF = 18
subtract 7
EF = 11
4. (AB + 32)/2 = 22
Multiply by 2
AB + 32 = 44
Subract 32
AB = 12
5. Average
360 degrees because it would rotate all the way back on to itself, 90 and 45 degrees wouldn't rotate it far enough, and 180 degrees would just flip it
x = 1
Step-by-step explanation:
Given data: 
Recall: If f(x) = 0, then x is called the zero of the function.
To find zero of the function, take f(x) = 0.

Add 6 to both sides of the equation.

Divide both sides of the equation by 3.

Taking square on both sides of the equation.
⇒ x + 3 = 4
⇒ x = 1
Hence, the zero of the function is 1.
The y-intercept of the line should be 7