Timed Mini Exam 54 — Timed Mini Exams

Questions in this quiz (10)

1. The table shows the electricity rates for two types of customers.A workshop is charged the commercial rate and uses $$360$$ kilowatt-hours of electricity. What is the cost of the electricity?

   • $$44.10$$ dollars
   • $$53.10$$ dollars
   • $$56.25$$ dollars
   • $$63.10$$ dollars

2. Membership in a neighborhood organization increased from $$80$$ members to $$124$$ members. What was the percent increase in membership?

   • $$35\%$$
   • $$44\%$$
   • $$45\%$$
   • $$55\%$$

3. An airport recorded approximately $$18{,}000$$ flights during one month. About $$35\%$$ of the flights were delayed. Approximately how many flights were delayed?

   • Approximately $$6300$$ flights
   • Approximately $$5400$$ flights
   • Approximately $$7200$$ flights
   • Approximately $$11{,}700$$ flights

4. Layla drove for $$3$$ hours at $$60$$ miles per hour and then for another $$2$$ hours at $$40$$ miles per hour. Which expression represents her average speed for the entire trip?

   • $$\frac{60+40}{5}$$
   • $$\frac{60(2)+40(3)}{5}$$
   • $$\frac{60(3)+40(2)}{5}$$
   • $$\frac{60(3)+40(2)}{2}$$

5. What is the reading, in amps, on the meter shown?

   • $$13$$ amps
   • $$17$$ amps
   • $$23$$ amps
   • $$27$$ amps

6. The people who could maintain their living standard for a year were how many times those who could maintain their living standard for a week or two?

   • $$\frac{1}{2}$$ time
   • The same
   • $$1\frac{1}{2}$$ times
   • $$2$$ times

7. The illustration shows the dimensions of the side of a barn. Which expression represents the area, in square feet, of the side of the barn?

   • $$(40)(20)+(0.5)(40)(15)$$
   • $$(40)(35)+(0.5)(40)(15)$$
   • $$(40)(20)+(40)(35)$$
   • $$(40)(35)+(0.5)(40)(20)$$

8. What is the value of $$y$$ for the equation $$y=x^2-2x$$ when $$x=14$$?

   • $$140$$
   • $$154$$
   • $$168$$
   • $$196$$

9. What is the value of $$y$$ for the equation $$y=x^2-4x+1$$ when $$x=-5$$?

   • $$6$$
   • $$46$$
   • $$36$$
   • $$56$$

10. What is the value of $$y$$ for the equation $$y=x^2-3x-10$$ when $$x=-2$$?

    • $$-12$$
    • $$-6$$
    • $$8$$
    • $$0$$