A patient is administered a dose of 50 mg of a drug. If she is hooked to an IV that injects and additional 5 mg of the drug every hour, when will she have 75 mg of the drug in her bloodstream?

A patient is administered a dose of 50 mg of a drug. If the body naturally disposed of 7% of the drug every hour, how much of the drug will remain 15 hours later?

In the 2000 U.S. Census, a small city had a population of 60,000. By 2010, the population had reached 88,815. If the population grows by the same percent each year, when will the population reach 100,000?

Five years ago you opened a savings account with annual compound interest by depositing $1,500. You check your balance today, and it is $1,824.98. Assuming you have made and will make no withdrawals or deposits, when will your account have a balance of $3000?

At 12:00 noon, there were 225 bacteria present. By 4:00pm, there were 427 bacteria. If the bacteria grows continuously, how many will there be at 7:30 pm?

the doubling time of an investment is the amount of time it takes to double in value. If an investment with 3.6% Annika compound interest is worth $2000, find it's doubling time.

The doubling time of an investment with continuous compound interest is 12.6 years. If the investment is worth $23,000 today, how much will it be worth 5 years from now?

The half life of a decaying substance is the amount of time it takes for the substance to reduce to half of its original amount. If a substance has a half life of 800 years, and there are 40 mg present now, how long will it take for the substance to be reduced to 10 mg?