PLEASE HELP ASAP!! Please don't look up the top speed of these animals it doesn't work that way I tried.

When driving, the peregrine falcon can reach speeds of up to 1775 miles per hour. Write and solve equations to find each of the following.

A)The top sped of a peregrine falcon is 20 miles per hour less than three times the top speed of a cheetah. What is the cheetah top speed?

B)A sailfish can swim up to 1 mile per hour less that one fifth the top speed of a peregrine falcon. Find the top speed that a sailfish swim.

C)The peregrine falcon can reach speeds to about 13 miles per hour more than 6 times the speed of the fastest human. What is the approximate speed of the fastest human?