Can anyone help me ASAP

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

An account with a $250 balance accrues 2% annually. if no deposits or withdrawals are made, which graph can be used to determine approximately how many years will it take for the balance to be $282? it's e2020 ni️️as

Asap will give brainiest to first person to answer what is the measure of angle b in the triangle? enter your answer in the box. m∠b=