Is the number of statistic students now reading a book a discrete random variable, a continuous random variable, or not a random variable?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

The verbal translation for the difference of m and 7 increased by 15

Here is my question! jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?