Comparing Functions in the Real World

Question 1

In science, students are observing the growth of two plants. Plant A receives sunlight and Plant B does not. The graph and table show the data for this scenario.What is the initial height of Plant B? inches

Revolt · Accepted Answer

4

Question 2

How fast does Plant B grow each week?

Revolt · Accepted Answer

1.4 in.

Question 3

Which plant grows faster each week?

Revolt · Accepted Answer

Plant A, 0.4 in. more

Question 4

Question 4

Revolt · Accepted Answer

1.8 in.; 1.4 in.; Plant A, 0.4 in. more

Question 5

Use the data for each plant’s growth to determine and compare the rates of change.How fast does Plant A grow each week? How fast does Plant B grow each week? Which plant grows faster each week?

Revolt · Accepted Answer

1.8 in.; Selection 1: 1.8 in.; Selection 2: 1.4 in.; Selection 3: Plant A, 0.4 in. more

Question 6

Simon claims that Plant B will be taller than Plant A in 6 weeks because it has the greater initial value. Is he correct?

Revolt · Accepted Answer

No. The greater rate of change of Plant A will result in it being 0.9 inches taller in 6 weeks.

Question 7

Assume Plant B received sunlight, and its rate of change was 1.6 inches a week instead of 1.4 inches per week. Would it be taller at 6 weeks?

Revolt · Accepted Answer

Yes. It will be 0.3 inches taller.

Question 8

What can Jenna conclude about her math and science assignments?

Revolt · Accepted Answer

She had more math assignments to start with, but completed more science assignments weekly.

Question 9

more weeks

Revolt · Accepted Answer

3

Question 10

Choose a relationship model that will reach $0 in the same number of days as this scenario:Mika has $12 and spends $2 each day.

Revolt · Accepted Answer

y = –3x + 18

Comparing Functions in the Real World Answers

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