The correct answer is: A. multiplies the contents of detail and product fields by 1.3
The expression [detail] ! [product] * 1.30 is a mathematical expression that uses the ! operator to divide the contents of the detail field by the contents of the product field, and then multiplies the result by 1.3.
The ! operator is a mathematical operator that is used to divide two numbers. The order of operations in a mathematical expression is important, and the ! operator is evaluated before the * operator.
In this expression, the ! operator is evaluated first, and the contents of the detail field are divided by the contents of the product field. The result of this division is then multiplied by 1.3.
The answer to each option is as follows:
- Option A: multiplies the contents of detail and product fields by 1.3. This is the correct answer.
- Option B: First divides detail by product and then multiplies by 1.3. This is incorrect because the ! operator is evaluated before the * operator.
- Option C: multiplies the contents of detail in the product table by 1.3. This is incorrect because the expression does not specify which table the fields are from.
- Option D: multiplies the contents of product in the detail table by 1.3. This is incorrect because the expression does not specify which table the fields are from.