Find the number of passwords that contain at least one occurrence of at least one of the six special characters if p is the number of passwords that are available for this computer system and q is the number of passwords that do not contain any of the special characters.

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

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