Peter's simple annual interest account currently has $1128.50. He remembers that he originally placed $925 at a rate of 5.5%. How many years ago did Peter place money into his account?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

I'll give brainliest if you answer right : )

Jason went to an arcade to play video games. he paid $2 for every 11 tokens he bought. he spent a total of $16 on tokens. which equation can be used to determine, t, the number lf tokens jason bought