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Perplex
  • Dashboard
Topics
Exponents & LogarithmsRounding & ErrorSequences & SeriesFinancial Mathematics
Cartesian plane & linesFunction TheoryModelling
2D & 3D GeometryVoronoi Diagrams
ProbabilityDescriptive StatisticsBivariate StatisticsDistributions & Random VariablesInference & Hypotheses
DifferentiationIntegration
Calculator Skills
Review VideosFormula BookletAll Study Sets
BlogLanding Page
Sign UpLogin
Perplex
IB Math AISL
/
Function Theory
/
Problem Bank
IB Math AISL
/
Function Theory
/
Problem Bank

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[Maximum mark: 5]

The function ​h(x)=6x+2​ models the cost (in dollars) of hiring a babysitter for ​x​ hours.

  1. Write down the cost of hiring the babysitter for ​7​ hours.

    [1]
    Part (a):
    h(7)= dollars
  2. State the gradient of the function and explain what it represents in this context.

    [2]
  3. Find ​h−1(50), and state what this value represents in context.

    [2]
[Maximum mark: 5]

The function ​h(x)=6x+2​ models the cost (in dollars) of hiring a babysitter for ​x​ hours.

  1. Write down the cost of hiring the babysitter for ​7​ hours.

    [1]
    Part (a):
    h(7)= dollars
  2. State the gradient of the function and explain what it represents in this context.

    [2]
  3. Find ​h−1(50), and state what this value represents in context.

    [2]