The number 0 belongs to which classification seeking

Which of the following represents the range of the graph of f(x) below

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?