Final answer:
To write an equation in exponential form, we separate the base and exponent. In option A, the equation 4^3 = 64 is already in exponential form.
Step-by-step explanation:
To write an equation in exponential form, we need to express the base and exponent separately. In option A, the equation is already in exponential form, 4^3 = 64. The base is 4 and the exponent is 3. So, the exponential form is 4 raised to the power of 3 equals 64.