Below are the responses for each question provided:
Question 1
A) The greatest common factor is: 2x²y⁴.
Question 2
A) Steps in order to factor \(3x^2 - 13x - 10\):
- Determine if there is a greatest common factor amongst all the terms.
- Find the two numbers that give a product of -30 and a sum of -13.
- Replace the middle term with -15x and 2x.
- Factor by grouping: Take the greatest common factor out of the first two terms and the greatest common factor out of the last two terms to get \(3x(x−5) + 2(x−5)\).
- Factor the common factor once more to get your final answer.
- Final answer: \( (x−5)(3x+2) \).
- Multiply \(3×−10\).
Question 3
A) Fill in the blank:
- \(x^2 - 3x - 10 = (x - 5)(x + 2)\)
- \(3x^2 - 6x + 9 = (3)(x^2 - 2x + 3)\)
- \(9x^2 - 25 = (3x - 5)(3x + 5)\)
Question 4
A) The x-intercepts of \(y=(2x−3)(x−6)\) are: (1.5, 0) and (6, 0).
Question 5
A) The solutions of the graph shown below select ALL that apply:
- \(x = 2.5\)
- \(x = -3\)
- \(x = 3\)
Question 6
A) The minimum of the graph \(y=(x+4)^2−5\) is: (-4, -5).
Question 7
A) The equation that has the same zeros as the function graphed is: (x−2)(x−5)=y.
Question 8
A) The zeros of the graph \(y=2x^2 + 5x - 12\) are: 3 and -4.
Question 9
A) a) Find \(h(2.5)\): 130.
b) What does \(h(2.5)\) represent in the context of this problem?: The height of the rock 2.5 seconds after it has been thrown.
c) Does it make sense to find \(h(-10)\)?: No, it does not make sense because time cannot be negative.
Question 10
A) The maximum profit that can be made from \(P(l) = -4l² + 32l - 52\) is: $12,000.
Question 11
A) Solve for x from \(x² - 64 = 0\):
- Solutions: -8, 8.
Question 12
A) Match the equation on the left to its equivalent on the right:
- \(y=(x+3)²−8\) → \(y=x² + 6x + 1\)
- \(y=x²−10x + 16\) → \(y=(x−2)(x−8)\)
Question 13
A) Before identifying \(a\), \(b\), and \(c\) in \(7x² + 2x = 4\), we need to: The equation needs to be set equal to zero.
Question 14
A) The values of \(a\), \(b\), and \(c\) for \(5x² + 12x = 8\) are:
- \(a = 5\)
- \(b = 12\)
- \(c = -8\)
Question 15
A) Steps in the correct order to solve \(x²−10x=12\) using the quadratic formula:
- \(x^2−10x−12=0\)
- Identify \(a = 1, b = -10, c = -12\).
- Use the quadratic formula: \(x=\frac{-b±\sqrt{b^2−4ac}}{2a}\).
- \(x=10±\frac{√148}{2}\).
- \(x=5±\frac{√37}{1}\).
- Final answer: \(x=10±\frac{√(2)}{3}\).
Question 16
A) The value of \(c\) that would make \(x²−8x+c=13\) a perfect square trinomial is: 16.