Austin collects rare Pokémon cards. He currently has 42 cards in his collection. His parents buy him 3 rare cards every year on his birthday. How long will it take him to collect 78 Pokémon cards?

A: 3p+42=78
B: 78p-3=78
C: 42p+3=78
D: 3p-78=42

option A is the correct answer.

Step-by-step explanation:

Let p represent the number of years for which his parents bought him rare Pokémon cards.

His parents buy him 3 rare cards every year on his birthday. This means that in p years, he would be getting 3p rare cards from his parents.

He currently has 42 cards in his collection. This means that the number of cards that he would have in his collection in p years is

3p + 42

Therefore, the time it will take him to collect 78 Pokémon cards would be

3p + 42 = 78

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i