Alg - U4 - LT 4 Practice

Alg - U4 - LT 4 Practice

Infections seldom start with a single bacterium. Suppose you cut yourself on a rusty nail that puts 100 bacteria cells into the wound. Suppose also that those bacteria double after every hour.

Question #1

Multiple Choice

What's the y-intercept?

Infections seldom start with a single bacterium. Suppose you cut yourself on a rusty nail that puts 100 bacteria cells into the wound. Suppose also that those bacteria double after every hour.

• 100

• 2

• 4

• 10

Infections seldom start with a single bacterium. Suppose you cut yourself on a rusty nail that puts 100 bacteria cells into the wound. Suppose also that those bacteria double after every hour.

Question #2

Multiple Choice

State the scale factor.

Infections seldom start with a single bacterium. Suppose you cut yourself on a rusty nail that puts 100 bacteria cells into the wound. Suppose also that those bacteria double after every hour.

• 100

• 2

• 4

• 10

Open Ended

Write the exponential equation:

Suppose you are on a team studying the growth of bacteria in a laboratory experiment. The equation that represents the growth of bacteria is:

 $b\left(t\right)=6\left(2\right)^t$  

Question 4

Multiple Choice

Interpret the scale factor.

 $b\left(t\right)=6\left(2\right)^t$  

• For every hour the bacteria multiplies by 6 bacteria.

• For every hour the bacteria multiplies by 2 bacteria.

• The starting bacteria is 6.

Suppose you are on a team studying the growth of bacteria in a laboratory experiment. The equation that represents the growth of bacteria is:

 $b\left(t\right)=6\left(2\right)^t$  

Question 5

Multiple Choice

Interpret the y-intercept.

 $b\left(t\right)=6\left(2\right)^t$  

• For every hour the bacteria multiplies by 6 bacteria.

• The starting bacteria is 2.

• The starting bacteria is 6.

Suppose that some good friends decide to start their own Pay It Forward tree. The table shows the progress in each stage.

Question 6

Multiple Choice

State the y-intercept.

• 3

• 4

• 12

Open Ended

Interpret the y-intercept in context of the problem:

Suppose that some good friends decide to start their own Pay It Forward tree.

Suppose that some good friends decide to start their own Pay It Forward tree. The table shows the progress in each stage.

Question 8

Multiple Choice

State the scale factor.

Suppose that some good friends decide to start their own Pay It Forward tree.

• 3

• 4

• 12

• 0

Open Ended

Interpret the scale factor in context of the problem:

Suppose that some good friends decide to start their own Pay It Forward tree.

Go to Socrative.com Room: SCHOENECK to write your own story for an exponential function. Someone should be able to write the equation from your work.