I think the answer would be 30 minutes
A= 4 points
B= 3 points
C= 2 points
D= 1 point
F= 0 points
So you add 2+2+4+4+3+3+3+1
Which equals 22
Now divide 22 by 8
You get 2.75
So yes with a 2.75 gpa you should pass 8th grade as most schools require nothing less than a 2.0
The answer is -2.5. this is how you work it out.
21.4 + (-23.9) = -5/2 = -2.5
The answer to your question is a b c or d
The angle of x is 65
i hope this helps