Abox is filled with 7 red cards, 4 brown cards, and 3 yellow cards. a card is chosen at random from the box. what is the probability that it is a red or a yellow card? write your answer as a fraction in simplest form.

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?  

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

Seattle, washington is known for being rainy. one day last month, 8 inches of rain fell in 1 1/2 hours. what us the rate of the rainfall expressed in ft per plzzz write a proportion i will give you 100 points