There are 9 students in a class: 7 boys and 2 girls. if the teacher picks a group of 3 at random, what is the probability that everyone in the group is a boy?

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

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

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.