Divide. Write your answer as a fraction or mixed number in simplest form. -4/5 divided by 16/15

A(t)=728(1+0.04)^t how much money did aditya originally invest

What is the number 321,000,000 in scientific notation? also what is the number? ?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.