Timed Mini Exam 50 — Timed Mini Exams

Questions in this quiz (10)

1. A city has approximately $$318{,}400$$ households. A planner estimates that each household has an average of $$3$$ people. Which is the best estimate of the city's population?

   • About $$250{,}000$$ people
   • About $$500{,}000$$ people
   • About $$1$$ million people
   • About $$2$$ million people

2. In one study, the average commuter lost $$34$$ hours waiting in traffic during one year. Seven years later, the average commuter lost $$59$$ hours. How many more hours did the average commuter lose during the later year?

   • $$25$$ hours
   • $$23$$ hours
   • $$27$$ hours
   • $$93$$ hours

3. The greatest distance of a planet from its star is $$6{,}417{,}000{,}000$$ miles. Which expression represents this distance in scientific notation?

   • $$6.417\times10^6$$ miles
   • $$64.17\times10^8$$ miles
   • $$0.6417\times10^{10}$$ miles
   • $$6.417\times10^9$$ miles

4. A mineral sample weighs $$735$$ pounds. If $$\frac{1}{35}$$ of its weight is copper, how many pounds of copper does the sample contain?

   • $$18$$ pounds
   • $$21$$ pounds
   • $$25$$ pounds
   • $$35$$ pounds

5. A paving mixture uses $$2$$ units of cement, $$5$$ units of sand, and $$10$$ units of gravel. What is the ratio of sand to gravel in simplest form?

   • $$2:1$$
   • $$2:5$$
   • $$1:2$$
   • $$3:5$$

6. A family bought a house for $$40{,}000$$ dollars and later sold it for $$280{,}000$$ dollars. By what percent did the value of the house increase?

   • $$240\%$$
   • $$500\%$$
   • $$700\%$$
   • $$600\%$$

7. The table shows the estimated time required to complete four parts of an application.What is the total estimated time required?

   • $$22$$ hours $$40$$ minutes
   • $$21$$ hours $$40$$ minutes
   • $$23$$ hours $$30$$ minutes
   • $$24$$ hours $$10$$ minutes

8. Ten people agreed to participate in a $$6$$-month study about jogging habits and weight loss. The participants kept a log of the average number of hours they jogged each week. The average hours spent jogging and each person's weight loss are plotted on the scattergram below. Each point described below is pictured on the scattergram. Which of the following points conforms least to the pattern shown on the graph?

   • $$10$$ pounds and $$2$$ hours
   • $$20$$ pounds and $$1\frac{1}{2}$$ hours
   • $$15$$ pounds and $$3\frac{1}{2}$$ hours
   • $$25$$ pounds and $$5$$ hours

9. The vertex angle of an isosceles triangle measures $$46$$ degrees. What is the measure of each base angle?

   • $$46$$ degrees
   • $$57$$ degrees
   • $$67$$ degrees
   • $$134$$ degrees

10. A rectangle has a perimeter of $$148$$ feet. Its length is $$10$$ feet greater than its width. What is the length of the rectangle?

    • $$32$$ feet
    • $$37$$ feet
    • $$52$$ feet
    • $$42$$ feet