A radioactive isotope has a half-life of 347 years. you start with a sample of 24717 gramshow much will be in 264 years Round your answer to two decimal places?

Simplify the expression 10/11(22z) + (a+5) -1

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

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 ?