Final answer:
To evaluate the expression 12.5 + 3.8% of x, we multiply x by 0.038 and add the result to 12.5. The rounded answer is 16.34.
Step-by-step explanation:
To evaluate the expression 12.5 + 3.8% of x for x = 7.9, we need to find 3.8% of 7.9 first and then add it to 12.5.
To find 3.8% of 7.9, we multiply 7.9 by 0.038. 7.9 * 0.038 = 0.3002.
Adding 0.3002 to 12.5 gives us the result: 12.5 + 0.3002 = 12.8002.
Therefore, the result of the expression is 12.8002.
Rounding to the hundredths place, the correct answer is option A: 16.34.