Quiz about Homework 3/18

Question 1

The table shows the number of people in a particular country over, t, in years.

Which function, f(t), best models the number of bacteria cells over time, t, where t is between 0 and 3?

Accepted Answer

$$f\left(t\right)=50\left(5\right)^t$$

Answer

$$f\left(t\right)=5\left(50\right)^t$$

Answer

$$f\left(t\right)=5t+50$$

Answer

$$f\left(t\right)=50t+5$$

Question 2

The table shows the population in a particular colony over time, t, in days.

Which function, f(t), best models the number of bacteria cells over time, t, where t must be between 0 and 3?

Accepted Answer

$$f\left(t\right)=50t+50$$

Answer

$$f\left(t\right)=2\left(50\right)^t$$

Answer

$$f\left(t\right)=2t+50$$

Answer

$$f\left(t\right)=50\left(2\right)^t$$

Question 3

In the following graph, which are the most appropriate units for the rate of change in the graph?

Accepted Answer

$$\frac{Deer\ Population}{Years}$$

Answer

$$\frac{Years}{Deer\ Population}$$

Answer

$$\frac{Days}{Deer\ Population}$$

Answer

$$\frac{Years}{Days}$$

Question 4

What would be the domain for the function?

Accepted Answer

$$x\ge0$$

Answer

$$x\ge80$$

Answer

$$x<0$$

Answer

$$x<80$$

Question 5

What is the range of the function?

Accepted Answer

$$y\ge80$$

Answer

$$y>80$$

Answer

$$y<0$$

Answer

$$y\ge0$$

Question 6

Write the equation of the line in slope-intercept form.

Accepted Answer

$$y=\frac{2}{3}x+2$$

Answer

$$y=-\frac{2}{3}x+2$$

Answer

$$y=2x+\frac{2}{3}$$

Answer

$$y=2x+2$$

Question 7

Write the equation of the line in standard form.

Accepted Answer

$$x-2y=2$$

Answer

$$2x+2y=2$$

Answer

$$x+y=2$$

Answer

$$2x-y=2$$

Question 8

Convert the following equation from slope-intercept form to standard form

$$y=3x-4$$

Accepted Answer

3x - y = 4

Answer

y - 4 = 3x

Answer

3x + y = 4

Answer

y + 3x = 4

Question 9

Convert the following from standard form to slope intercept form.

$$10x-3y=30$$

Accepted Answer

$$y=\frac{10}{3}x-10$$

Answer

$$y=-\frac{10}{3}x-10$$

Answer

$$y=\frac{10}{3}x+10$$

Answer

$$y=\frac{10}{3}x+30$$

Question 10

For the following table, which is the most appropriate units of measurements.

Accepted Answer

$$\frac{Dollars}{Minute}$$

Answer

$$\frac{Minutes}{Seconds}$$

Answer

$$\frac{Minutes}{Total\ Ch\arg es}$$

Answer

$$\frac{Total\ Ch\arg es}{Minutes}$$

Question 11

What is the average rate of change in the number of shingles from 20 minutes to 40 minutes?

Accepted Answer

.25 dollars per minute

Answer

15 dollars per minute

Answer

5 dollars per minute

Answer

4 dollars per minute

Question 12

Solve the following

$$5-\left(10x-5\right)>10x+50$$

Accepted Answer

x < -2

Answer

x > -2

Answer

x > 4

Answer

x < -4

Homework 3/18

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