Suppose a sample of a certain substance decayed to 77.4% of its original amount after 300 days. What is the half-life (in days) of this substance?

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

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 ?