Ineed with #22.. i have to get it done before tomorrow morning somebody me with it .. i don't want to get a f on it

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236