Algebra, NAPX-E4-CA23 SA

Question

{{{question}}}

Worked Solution

{{{workedSolution}}}

Variant 0

DifficultyLevel

643

Question

Jeremy uses the formula below to estimate the population of Amazonian River Dolphins over a three year period.

Year 1 = 2000


Year 2 = Year 1 + Year 120\dfrac{ \text{Year 1}}{20}


Year 3 = Year 2 + Year 220\dfrac{ \text{Year 2}}{20}


Estimate the population of Amazonian River Dolphins in Year 3?

Worked Solution

Year 1 = 2000

Year 2 = 2000 + 200020\dfrac{2000}{20} = 2100

Year 3 = 2100 + 210020\dfrac{2100}{20} = 2205

Question Type

Answer Box

Variables

Variable nameVariable value
question
Jeremy uses the formula below to estimate the population of Amazonian River Dolphins over a three year period. >Year 1 = 2000
>Year 2 = Year 1 + $\dfrac{ \text{Year 1}}{20}$
>Year 3 = Year 2 + $\dfrac{ \text{Year 2}}{20}$
Estimate the population of Amazonian River Dolphins in Year 3?
workedSolution
Year 1 = 2000 Year 2 = 2000 + $\dfrac{2000}{20}$ = 2100 Year 3 = 2100 + $\dfrac{2100}{20}$ = {{{correctAnswer0}}}
correctAnswer0
2205
prefix0
suffix0

Answers

Specify one or more 'ANSWER' block(s) as exampled below.
Note: correctAnswer is required, the rest are optional. ("correctAnswer" is what the student would need to type in to the box to get the answer correct.)

For example:
correctAnswer: 123.40

And optionally, specify the following, but only if you need something different to the defaults: 'width' defaults to 5 if not present, and valid values are 3 to 10; 'prefix' and 'suffix' default to nothing if not present.
prefix: $
suffix: mm$^2$
width: 5

correctAnswerNcorrectAnswerValueAnswer
correctAnswer02205

Variant 1

DifficultyLevel

640

Question

Will uses the formula below to estimate the population of koalas in a national park for three years after a bush fire.

Year 1 = 1200


Year 2 = Year 1 + Year 110\dfrac{ \text{Year 1}}{10}


Year 3 = Year 2 + Year 210\dfrac{ \text{Year 2}}{10}


Estimate the koala population in Year 3?

Worked Solution

Year 1 = 1200

Year 2 = 1200 + 120010\dfrac{1200}{10} = 1320

Year 3 = 1320 + 132010\dfrac{1320}{10} = 1452

Question Type

Answer Box

Variables

Variable nameVariable value
question
Will uses the formula below to estimate the population of koalas in a national park for three years after a bush fire. >Year 1 = 1200
>Year 2 = Year 1 + $\dfrac{ \text{Year 1}}{10}$
>Year 3 = Year 2 + $\dfrac{ \text{Year 2}}{10}$
Estimate the koala population in Year 3?
workedSolution
Year 1 = 1200 Year 2 = 1200 + $\dfrac{1200}{10}$ = 1320 Year 3 = 1320 + $\dfrac{1320}{10}$ = {{{correctAnswer0}}}
correctAnswer0
1452
prefix0
suffix0

Answers

Specify one or more 'ANSWER' block(s) as exampled below.
Note: correctAnswer is required, the rest are optional. ("correctAnswer" is what the student would need to type in to the box to get the answer correct.)

For example:
correctAnswer: 123.40

And optionally, specify the following, but only if you need something different to the defaults: 'width' defaults to 5 if not present, and valid values are 3 to 10; 'prefix' and 'suffix' default to nothing if not present.
prefix: $
suffix: mm$^2$
width: 5

correctAnswerNcorrectAnswerValueAnswer
correctAnswer01452

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