Westside Energy charges its electric customers a base rate of $8.00 per month, plus 11 per kilowatt-hour (kWh) for the first 300 kWh used and 5¢ per kWh for all usage over 300kWh. Suppose a customer uses x kWh of electricity in one month. (a) Express the monthly cost E as a piecewise-defined function of x. (Assume E is measured in dollars.) E(x) = if 0 ≤ x ≤ 300 if 300 < x (b) Graph the function Efor 0≦x≤ 600. E 60 40 20 E 50 40 30 30 20 20 10 10 100 200 300 400 500 600 X 100 200 300 400 500 600 E 50 40 30 20 10 E 50 40 30 20 10 X 100 200 300 400 500 600 X 100 200 300 400 500 600

Westside Energy charges its electric customers a base rate of $8.00 per month, plus 11 per kilowatt-hour (kWh) for the first 300 kWh used and 5¢ per kWh for all usage over 300kWh. Suppose a customer uses x kWh of electricity in one month. (a) Express the monthly cost E as a piecewise-defined function of x. (Assume E is measured in dollars.) E(x) = if 0 ≤ x ≤ 300 if 300 < x (b) Graph the function Efor 0≦x≤ 600. E 60 40 20 E 50 40 30 30 20 20 10 10 100 200 300 400 500 600 X 100 200 300 400 500 600 E 50 40 30 20 10 E 50 40 30 20 10 X 100 200 300 400 500 600 X 100 200 300 400 500 600

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter5: Inverse, Exponential, And Logarithmic Functions

Section5.3: The Natural Exponential Function

Problem 9E

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