In Exercises , formulate the linear or piecewise linear model for the real-life scenario....

In Exercises , formulate the linear or piecewise linear model for the real-life scenario. If a linear model represents a directly proportional Relationship between the independent and dependent variables, so state.

 Sales Tax The Picture People photography studio in Tacoma, Washington, charges $40 for one of its promotional photo packages. The total purchase price for the promotional package, including tax, is $43.20. (Source: Picture People sales receipt.)

(a)Write the equation for Tacoma sales tax as a function of the pretax purchase price.

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(b)A family has $60 cash to pay for pictures. What is the maximum pretax purchase price that the family can afford?