In math class, 4 students complete individual surveys to determine the percentage of high school teachers that have a second job. which two surveys show proportional results

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

We just started the introduction into circles and i have no idea how to do this.

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 ?