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Westside Energy charges its electric customers a base rate of $8.00 per month, plus 15¢ per kilowatt-hour (kWh) for the first 300 kWh used and 7¢ per kWh for all usa (a) Express the monthly cost E as a piecewise-defined function of x. (Assume E is measured in dollars.) if 0 ≤ x ≤ 300 E(x) = (b) Graph the function E for 0 ≤ x ≤ 600. E 60 40 20 E 60 40 if 300 < x 20 100 200 300 400 500 600 X 100 80 E 60 40 20 E 60 40 20 100 200 300 400 500 600 X

Westside Energy charges its electric customers a base rate of $8.00 per month, plus 15¢ per kilowatt-hour (kWh) for the first 300 kWh used and 7¢ per kWh for all usa (a) Express the monthly cost E as a piecewise-defined function of x. (Assume E is measured in dollars.) if 0 ≤ x ≤ 300 E(x) = (b) Graph the function E for 0 ≤ x ≤ 600. E 60 40 20 E 60 40 if 300 < x 20 100 200 300 400 500 600 X 100 80 E 60 40 20 E 60 40 20 100 200 300 400 500 600 X

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.6: Solving Quadratic Equations By Using The Quadratic Formula
Problem 28PPS
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Westside Energy charges its electric customers a base rate of $8.00 per month, plus 15¢ per kilowatt-hour (kWh) for the first 300 kWh used and 7¢ per kWh for all usage over 300 kWh. 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) = (b) Graph the function E for 0 ≤ x ≤ 600. E 60 E 100 80 60 KL 40 20 X 100 200 300 400 500 600 40 20 E 60 40 if 0 ≤ x ≤ 300 20 if 300 < x 100 X 200 300 400 500 600 E 60 ✓ 40 20 X 100 200 300 400 500 600 X 100 200 300 400 500 600
Transcribed Image Text:Westside Energy charges its electric customers a base rate of $8.00 per month, plus 15¢ per kilowatt-hour (kWh) for the first 300 kWh used and 7¢ per kWh for all usage over 300 kWh. 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) = (b) Graph the function E for 0 ≤ x ≤ 600. E 60 E 100 80 60 KL 40 20 X 100 200 300 400 500 600 40 20 E 60 40 if 0 ≤ x ≤ 300 20 if 300 < x 100 X 200 300 400 500 600 E 60 ✓ 40 20 X 100 200 300 400 500 600 X 100 200 300 400 500 600
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