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4 years ago

Need help with questions 23 & 25

Mathematics

1 answer:

BaLLatris [955]4 years ago

6 0

23. You are expected to be familiar with the relationship

... cost + markup = selling price

a) cost + $23.99 = $119.95

... cost = $119.95 -23.99 = $95.96

b) The markup as a fraction of cost is

... markup/cost = $23.99/$95.96 = 0.25 = 25%

c) cost + markup = selling price . . . . the equation we started with

... cost/cost + markup/cost = (selling price)/cost . . . . divide by cost

... 100% + 25% = (selling price)/cost = 125%

25.

a) See part c) of problem 23. Selling price is 126% of cost.

b) Selling price = $450 × 1.26 = $567

c) Markup = $450 × 0.26 = $117

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First of all, let us have a look at the definition of domain and range.

Domain of a function $y =f(x)$ is the set of input value i.e. the value of $x$ for which the function $f(x)$ is defined.

Range of a function $y =f(x)$ is the set of output value i.e. the value of $y$ or $f(x)$ for the values of $x$ in the domain.

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There are no values of $x$ for which p(x) is not defined so domain is All real numbers.

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Let us sketch the graph of given function.

Please find attached graph.

There are no values of $x$ for which $q(x)$ is not defined so domain is All real numbers.

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