Use a calculator to evaluate the following exponential expression. Round to two decimal places.
$7^{1.3}$

• A. $12.14$
• B. $12.55$
• C. $13.24$
• D. $11.75$

Answer: (B)

Verified step by step guidance

1. Identify the exponential function you need to evaluate. An exponential function generally has the form \(f(x) = a^{x}\), where \(a\) is the base and \(x\) is the exponent.
2. Determine the value of \(x\) for which you need to evaluate the function. This value is usually given in the problem or specified as the input to the function.
3. Substitute the given value of \(x\) into the exponential function. This means replacing every occurrence of \(x\) in the expression \(a^{x}\) with the given number.
4. Apply the exponentiation rule by calculating \(a\) raised to the power of the substituted value. Remember that exponentiation means multiplying the base \(a\) by itself as many times as indicated by the exponent.
5. Simplify the expression to get the value of the function at the specified \(x\). This will give you the evaluated result of the exponential function.