Which of the following inequalities is correct?
-5 > 0
10 < -13
-2 > -5
-5 < -8

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

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?  

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.