when clark was 7 years old he had 22 rare coins. Each year Clark added 15 coins to hiss collection. Assuming Clark does not sell or lose any coins, how old will Clark be when he has 577 coins?

44 years old

Step-by-step explanation:

22 + 15x = 577 ... with x being the number of years

15x = 577 - 22

15x = 555

x = 555/15

x = 37 ... so in 37 years he will have them ... and that would make Clark's age be (37 + 7) = 44 <===