NAME: Math 103L: Exercise on Functions ... - Bruce E. Shapiro

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9. The cost to produce x memory chips iswhere cost is measured in dollars.(a)(b)(c)C(x) = 800 + 5.25x,Sum What is the cost to produce 100 memory chips?Sum What is the average cost (per chip) to produce 100 memory chips?Sum Write a formula for the average cost (per chip) C(x) to produce x memorychips.6
Piecewise linear functions10. The Trussville Utiliities uses the rates shown in the table below to compute the monthlycost, C(x), of natural gas for residential customers. Usage, x, is measure in hundredcubic feet (HCF) of natural gas.Base charge $8.00First 1000 CCFOver 1000CCF$0.04 per HCF$0.07 per HCFa. Sum Find the charge for using 250 HCF.b. Sum Find the charge for using 1200 HCF.c. Sum Find an expression for the cost function C(x) for usage under 1000 CCF.d. Sum Find an expression for the cost function C(x) for usage over 1000 CCF.7
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Page 3 and 4: 4. Let f(x) = 2x 2 . Evaluate and s
Page 5: 8. The price-demand equation for ga

NAME: Math 103L: Exercise on Functions ... - Bruce E. Shapiro

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