Membership to a music club cost $130. members pay $5 for music lesson and non-members pay $15 for music lesson. how many music lessons would have to be taken for the cost to be the same for members and non-members

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

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?