Final answer:
The calculator function for calculating exponents is the '^' key, which allows any number to be raised to the power of another number.
Step-by-step explanation:
The calculator function that helps in calculating exponents in normal notation is option D) '^'. On most calculators, the '^' button allows you to raise a number to a specified power. For example, to calculate 2 to the power of 3, you would enter '2 ^ 3', which the calculator will interpret as 23, resulting in 8. The '^' key can be used for any base number and any exponent. Remember that while some calculators might have a dedicated exponent button, in other calculator models, you might need to access this function through a menu or by using a combination of keys. Additionally, some calculators have a button labeled 'exp' which is commonly used to enter numbers in scientific notation, not for general exponentiation.