7. A deadly bacteria doubles in size every 3 hours. If there were initially 14 spores present, how long will it take for the number of bacteria to increase to 1799 spores?

How many times more energy does a 450-nm blue photon have than a 656-nm red photon?  answer to three significant figures

How many times more intense is an earthquake of magnitude 8.2 than an earthquake of magnitude 7.5?

Personal care aide is an occupation that is growing quickly. Assume that, in a certain region, tehre will be a need for 179,599 personal care aides in 2024, a growth of about 28% over 2014 levels. How many personal care aides were there in this region in 2014?

The number of people infected with coronavirus doubles every 3.0 days. How many days does it take for the U.S. to go from one case (patient zero) to all 330,000,000 Americans being infected.

A fish population starts at 15000. The (annual) birth rate is 0.4; the (annual) death rate is 0.3. In addition, 1500 fish are stocked each year, and 2000 are caught and removed from the population each year. Determine the size of the population after 1 year and 2 years Answer to the nearest 1.

If you leave a 100-W light bulb on for a week, how many joules of energy will be consumed?

"Pie-O-Mania" bakery bakes pies. They bake 3/4 as many apple as banana pies and 5/9 as many cranberry as apple pies daily. Given that the bakery bakes 63 more banana than cranberry pies daily, how many apple pies does the bakery bake daily?

2. Suppose a bacteria sample contains 1000 bacteria. 6 hours later, there are 2400 bacteria. Find how long it would take until the sample has 10,000 bacteria.