Math Test Set 11

Each question has a few answer choices. Choose the best answer for each question. At the end of the quiz, you will see your results.

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1. \(\frac{x^{2}+3}{x(x+5)}\)

Find the values that make this rational expression undefined.
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B.
C.
D.

Question 1 of 10

2. Mia goes to East York Collegiate Institute. She is given the following information:

There are 150 grade 12 students at East York Collegiate Institute. 70 of the grade 12 students drive a car at the school. Half of all students with a grade average of 90 or higher have a car.

She is asked to find the probability of randomly choosing a grade 12 student with a car, given that the
student has an average grade of 90 or higher. She reasons initially that, since there are 70 grade 12 students out of 150 who have a car, it would be \(frac{7}{15}\). However, since it is a conditional probability, she needs to multiply by \(\frac{1}{2}\), since the probability that a student with a grade average of 90 or higher is \(frac{1}{2}\). This results in a probability of \(frac{7}{30}\). Is she correct or not, and why?
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B.
C.
D.

Question 2 of 10

3. Factor the expression. \(9x^{2} + 24x + 16\)
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D.

Question 3 of 10

Math- Equations

4. Solve the given equation for x.

−10x − 16 = 24
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D.

Question 4 of 10

Math-Evaluate expression

5. −8x + 9 at x = −9
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D.

Question 5 of 10

6. Simplify the given expression.

−(−50)
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Question 6 of 10

Math-Slope

7. Calculate the slope of the line passing through the points P and Q. Be sure to reduce your answer to lowest terms

P(−18, 8), Q(3,−10)
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D.

Question 7 of 10

Math-Percent of number

8. What number is 22.4% of 125?
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Question 8 of 10

Math-Solution of equations

9. Use the elimination method to solve each of the following systems.

3x − 7y = −75
−2x − 2y = −10
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D.

Question 9 of 10

10. Use the elimination method to solve each of the following systems.

−9x − 2y = 28
5x − 3y = −32
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D.

Question 10 of 10


 

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