state the domain and range of each relation and whether its a function

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

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?