Let's go over the questions one by one based on the image.

1. Problem 1: Polynomial Product

   • We are given the expression: $(8x^5 + \square x^2)(-3x \square - 5) = A$

   • Andre claims that any real number can go in either of the blank spaces and $A$ will still be a polynomial. The question asks if this is true and to explain the reasoning.

     Answer: Andre is correct. The product of two polynomials results in a polynomial as long as the coefficients in the expression are real numbers. A polynomial is defined as an expression involving powers of $x$ with real coefficients. Since no conditions are given that limit what can be placed in the blanks, any real number inserted in the blanks will produce a valid polynomial when multiplied out.

2. Problem 2: Dividing a Polynomial by a Number

   • Lin divides the polynomial $6x^2 - 7x + 2$ by 5 and gets $1.2x^2 - 1.4x + 0.4$. The question asks if $1.2x^2 - 1.4x + 0.4$ is still a polynomial.

     Answer: Yes, the result is still a polynomial. A polynomial consists of terms in the form $ax^n$ where $a$ is a real number and $n$ is a non-negative integer. Since the result of dividing by 5 still has terms where the powers of $x$ are non-negative integers (2, 1, and 0), and the coefficients are real numbers (1.2, -1.4, 0.4), the expression remains a polynomial.

3. Problem 3: Multiplying Two Integers

   • The question asks: What is the result when any two integers are multiplied?

     • a. A positive integer
     • b. An integer
     • c. An even number
     • d. A negative integer

     Answer: The correct answer is b. An integer. When any two integers are multiplied, the result is always an integer. The product may be positive, negative, or zero, but it will always be an integer.

4. Problem 4: Volume of an Open-Top Box

   • Clare is making an open-top box by cutting out corners from a 28-inch by 24-inch piece of poster board and folding up the sides. The volume $V(x)$ in cubic inches is a function of the side length $x$ of the square cutouts.

     • a. Write an expression for $V(x)$.

       Answer: The volume of the box is calculated as the product of its length, width, and height. After cutting out squares of side length $x$, the dimensions of the box are:

       • Length: $28 - 2x$
       • Width: $24 - 2x$
       • Height: $x$ So, the volume $V(x)$ is: $V(x) = x(28 - 2x)(24 - 2x)$

     • b. What is a reasonable domain for $V$ in this context?

       Answer: Since $x$ represents the side length of the cutout squares, $x$ must be greater than 0 and less than half of the smaller dimension of the poster board. The smaller dimension is 24 inches, so $x$ must satisfy $0 < x < 12$.

Do you want any further details or explanations on any of these problems?

Here are 5 related questions to consider:

1. What happens if a polynomial includes irrational coefficients?
2. Can a division by a non-integer number ever result in something other than a polynomial?
3. How does the multiplication of two negative integers affect the result?
4. If one side of the poster board was 30 inches instead of 28, how would that affect the volume expression?
5. How would the volume of the box change if Clare cut out rectangular corners instead of square ones?

Tip: When multiplying polynomials, be sure to apply the distributive property carefully to ensure every term is accounted for!