Answer:
D
Step-by-step explanation:
If its 1 quarter of a mile in 22.5, then we take <em>s, </em>seconds, times 4 which is 90.
SO we cross out A and B, and we're left with C AND D. Now we check the math on them.
.25/22.5 is 0.01111111 (repeating)
and 22.5/.25 is 90!
Well, we kinda hope that noone is splitting the students into parts;) so that means that the number of students must be divisible by 4 and 9, and since they don't have any divisors in common, it must be divisible by 4*9=36, and this is also the correct answer - 36.
P = 2a + b + c
Subtract 2a + b on both sides
c = P - (2a+b)
c = P - 2a - b
Hope that helps :)
The formula of a slope:

We have the points (-6, -1) and (-6, 4).
Substitute:

Dividing by 0 is not possible, therefore the slope is undefined.
<em>It's a vertical line x = -6</em>.