What is a ratio equivalent to 3:4 ? 3/4 2/3 4/3

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota