Algebra I Unit 5 lesson 8

Using the graph, is the accumulated amount of rainfall a function of time?

• Yes, because for all of the rainfall there is a time

• No, because the graph does not have a constant slope

• Yes, because there is exactly one value for every day

• No, because it is a function of rainfall

Using the graph, is time a function of accumulated rainfall?

• Yes, because for every day there is an accumulation amount

• No, because the graph is not linear

• Yes, because you either have rain or you do not on every single day

• No, because some days have the same accumulation value.

Clare noticed mold on the last slice of bread in a plastic bag. The area covered by the mold was about 1 square millimeter. She left the bread alone to see how the mold would grow. The next day, the area covered by the mold had doubled, and it doubled again the day after that.

If the doubling pattern continues, how many square millimeters will the mold cover 4 days after she notices the mold? (Hint: Select two answers)

• 16 square millimeters

• 2⁴ square millimeters

• 8 square millimeters

• 2*4 square millimeters

Clare noticed mold on the last slice of bread in a plastic bag. The area covered by the mold was about 1 square millimeter. She left the bread alone to see how the mold would grow. The next day, the area covered by the mold had doubled, and it doubled again the day after that.

Select the table that represents this description

• 
• 
• 

Clare noticed mold on the last slice of bread in a plastic bag. The area covered by the mold was about 1 square millimeter. She left the bread alone to see how the mold would grow. The next day, the area covered by the mold had doubled, and it doubled again the day after that.

Select the equation that represents this.

• A=2d

• A=2^d

__________is a function of _______.

• Area covered by mold, the number of days

• The number of days, area covered by mold

1. In a biology lab, a population of 50 bacteria reproduce by splitting. Every hour, on the hour, each bacterium splits into two bacteria.

• The number of bacteria is a function of time passed in hours.

• The hour is a function of the number of bacteria that was split.

1. In a biology lab, a population of 50 bacteria reproduce by splitting. Every hour, on the hour, each bacterium splits into two bacteria.

2. What is the independent and dependent variable?

• Independent: Bacteria

  Dependent: Number of hours

• Independent: Number of hours

  Dependent: Bacteria

1. In a biology lab, a population of 50 bacteria reproduce by splitting. Every hour, on the hour, each bacterium splits into two bacteria.

2. Which equation represents this?

• f(t)=50*2^t

• f(t)=50*2t

• f(t)=2t+50

• f(t)=50t+2