Mini Exam 9 — Timed Mini Exams

Questions in this quiz (10)

1. The scatterplot shows the temperature, $$y$$, in degrees Fahrenheit, recorded by a meteorologist at various times, $$x$$, in days since June 1. During which of the following time periods did the greatest increase in recorded temperature take place?

   • From $$x=6$$ to $$x=7$$
   • From $$x=5$$ to $$x=6$$
   • From $$x=2$$ to $$x=3$$
   • From $$x=1$$ to $$x=2$$

2. A distance of 112 furlongs is equivalent to how many feet? $$(1\text{ furlong}=220\text{ yards and }1\text{ yard}=3\text{ feet})$$

   • 73920

3. The equation $$d=16t$$ represents the distance, $$d$$, in inches, where $$t$$ represents the number of seconds since an object started moving. Which of the following is the best interpretation of 16 in this context?

   • The object moved a total of 16 inches.
   • The object moved a total of $$16t$$ inches.
   • The object is moving at a rate of 16 inches per second.
   • The object is moving at a rate of $$\frac{1}{16}$$ inches per second.

4. For the linear function $$j$$, $$j(x)=mx+144$$, where $$m$$ is a constant and $$j(12)=18$$. What is the value of $$j(10)$$?

   • 39

5. $$y=4x-9$$ $$y=19$$What is the solution $$(x,y)$$ to the given system of equations?

   • $$(4,19)$$
   • $$(7,19)$$
   • $$(19,4)$$
   • $$(19,7)$$

6. Scientists recorded data about the ocean water levels at a certain location over a period of 6 hours. The graph shown models the data, where $$y=0$$ represents sea level. Which table gives values of $$x$$ and their corresponding values of $$y$$ based on the model?

7. Which expression is equivalent to $$256w^2-676$$?

   • $$(16w-26)(16w-26)$$
   • $$(8w-13)(8w+13)$$
   • $$(8w-13)(8w-13)$$
   • $$(16w-26)(16w+26)$$

8. Line $$k$$ is defined by $$y=3x+15$$. Line $$j$$ is perpendicular to line $$k$$ in the $$xy$$-plane. What is the slope of line $$j$$?

   • $$-\frac13$$
   • $$-\frac{1}{12}$$
   • $$-\frac{1}{18}$$
   • $$-\frac{1}{45}$$

9. A right rectangular prism has a length of 28 centimeters, a width of 15 centimeters, and a height of 16 centimeters. What is the surface area, in square centimeters, of the right rectangular prism?

   • 2216

10. If $$3x^2-18x-15=0$$, what is the value of $$x^2-6x$$?

    • 5