What is the meaning of the unknown factor and quotient 24 divided by 4 equals

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Find the average rate of change for the given function drom x=1 to x=2