Answer:
Step-by-step explanation:

multiply by
on each side

add 1 on both sides 
make it equal 0

Factor

answer is 3 and -1
36 ×

Since 9 is a factor of 36 you can reduce the 36 to 4 and the 9 to one
Then just multiply what is left
4 <span>× 2 = 8
So, Mark completed 8 passes.</span>
30/80 = 0.375(100) = 37.5%
30 is 37.5% of 80