20 deaths for every 10 million people who use airplanes. a company that sells insurance provides $100,000 in case of a death on the airplane. a policy cost $1. calculate the expected value and how much the company can make in the long run for each policy it sells

2a+7+4ahow many terms? how many variables? any like terms? yes noif yes, which ones? what are the coefficients? any constants? yes noif yes, which ones? simplify the expression by combining like terms and constants: how many terms now?

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?