Final answer:
The symbolic forms for the given expressions are B) x^4 + 18, A) 15 + 512 - (14 + 36), A) 3 * 15 - 9 + 15 / 3, and A) 17y + √81 - 6x - 4. Each form adheres to the standard mathematical order of operations.
Step-by-step explanation:
Let's address each part of the student's question to write the symbolic form of the given expressions
For the expression 5. x^4 + 6√9, the symbolic form is B) x^4 + 18, since 6 multiplied by the square root of 9 (which is 3) equals 18.
The expression 15 + 8^3 - (14 + 6^2) simplifies to A) 15 + 512 - (14 + 36). This is because 8 to the power of 3 equals 512 and the square of 6 is 36.
For The product of three and fifteen minus nine plus the quotient of fifteen and three, the symbolic form is A) 3 * 15 - 9 + 15 / 3. This adheres to the order of operations correctly.
The last expression, The product of seventeen and y, plus the square root of eighty-one minus the product of six and x minus four, is A) 17y + √81 - 6x - 4. This follows the sequence of operations given, with the square root of 81 being a separate term subtracted by the product of six and x, then minus four.