Answer: Choice D) 
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Work Shown:

Explanation:
First I subtracted y/b from both sides. Then I multiplied both sides by 'a' to fully isolate x. You can optionally distribute the 'a' through to each term inside the parenthesis, but your teacher has chosen not to do this.
190 runners would not have finished the race.
If you add up all the waves, there were 952 total runners.
If 7/8 finished the race, then that means that 1/8 did not finish the race.
Just multiply 1/8 by 952 to get the amount that did not finish.
It would be 190.
If this is a true or false question, than this is true.
Answer:
B :)
Step-by-step explanation:
Answer:
20 = 6m or m = 20/6 = 10/3
Step-by-step explanation:
Let's say Samantha has s marbles and Paul has m marbles.
We know that s = 20 and that Samantha has 6 times as many marbles as Paul. This means s = 6m.
Substitute 20 in for s:
20 = 6m
m = 20/6
Thus, the equation is m = 20/6.
<em>~ an aesthetics lover</em>