Answer: The function rule is f(x) = 5(10)^x. Using this rule, we can find f(0) by substituting x with 0: f(0) = 5(10)^0 = 5 * 1 = 5. So f(0) = 5.
Here are the steps to find f(0) using the function rule f(x) = 5(10)^x:
1. Substitute x with 0 in the function rule: f(0) = 5(10)^0
2. Any non-zero number raised to the power of 0 is equal to 1: f(0) = 5 * 1
3. Multiply 5 by 1: f(0) = 5
4. So f(0) = 5.