9 qt. of a 20% acid solution was mixed with 1 qt. of pure water. What is the
concentration of the mixture?

For what values of b will f(x)= logbx be a decreasing function? (16 )

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite