If x + 2y = -6 and 5x + 9y = 7 are true equations, what would be the value of
-4x – 7y?

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?