Mini Exam 3 — Timed Mini Exams

Questions in this quiz (10)

1. A sub shop serves custom-made subs. There are 4 cheeses available, and customers may choose any 2 different cheeses for their sub. How many different combinations of 2 cheeses are possible?

   • $$8$$
   • $$6$$
   • $$99$$
   • $$24$$

2. What is the slope of the line represented by the equation $$6x+7y=9?$$

   • $$\frac{9}{10}$$
   • $$-\frac{9}{10}$$
   • $$-\frac{6}{7}$$
   • $$\frac{7}{6}$$

3. What is 70% of 350?

   • $$230$$
   • $$245$$
   • $$325$$
   • $$390$$

4. Determine the mean, median, mode, and range of the following data set: $$8,\ 9,\ 3,\ 8,\ 2$$

   • Mean = 6Median = 8Mode = 8Range = 7
   • Mean = 8 Median = 8Mode = 8Range = 7
   • Mean = 6 Median = 8 Mode = 8 Range = 6
   • Mean = 6Median = 3Mode = 8Range = 7

5. Evaluate: $$(20-10)^2+18-4(10-8)$$

   • $$128$$
   • $$110$$
   • $$89$$
   • $$14$$

6. Which table represents a function? **Table C** $$ \begin{array}{c|c} x & y\\ \hline 2 & 3\\ -5 & 3\\ -1 & 8\\ -2 & 18 \end{array} $$ **Table D** $$ \begin{array}{c|c} x & y\\ \hline 12 & 3\\ -5 & 3\\ 12 & 8\\ -2 & 18 \end{array} $$

7. Multiply: $$(3x-y)(4x+7y)$$

   • $$17x^2+7xy-9y^2$$
   • $$17x^2+18xy-7y^2$$
   • $$22x^2+12xy-5y^2$$
   • $$12x^2+17xy-7y^2$$

8. What is the slope of a line that is perpendicular to $$7x+4y=12?$$

   • $$\frac{4}{7}$$
   • $$-\frac{7}{4}$$
   • $$12$$
   • $$\frac{12}{7}$$

9. What is the value of $$f(x)=9x^3-2$$ when $$x=-3?$$

   • $$-938$$
   • $$-245$$
   • $$241$$
   • $$928$$

10. For which value of $$x$$ is the function $$f(x)=\frac{72+x}{x+12}$$ undefined?

    • $$x=0$$
    • $$x=-12$$
    • $$x=19$$
    • $$x=-20$$