Monthly electricity costs (in dollars) are based on the number of kilowatt hours (KWH) used. The cost for using 500 KWH is $50. The cost for using 800 KWH is $300. The graph of cost function c() is shown below. 300- 250- 200- 150- 100- 50- 0400 500 600 700 8 800 C(x) 100 200 300 400 500 Write a formula for the cost function c(a) for a greater than 500 KWHS.
Monthly electricity costs (in dollars) are based on the number of kilowatt hours (KWH) used. The cost for using 500 KWH is $50. The cost for using 800 KWH is $300. The graph of cost function c() is shown below. 300- 250- 200- 150- 100- 50- 0400 500 600 700 8 800 C(x) 100 200 300 400 500 Write a formula for the cost function c(a) for a greater than 500 KWHS.
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter1: Functions
Section1.4: Functions Given By Words
Problem 13E
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Transcribed Image Text:Monthly electricity costs (in dollars) are based on the number of
kilowatt hours (KWH) used. The cost for using 500 KWH is $50. The cost
for using 800 KWH is $300. The graph of cost function C(2) is shown
below.
300
250-
200-
150-
100-
50-
0 400 500 600 700 800
C(x)
100 200 300 400 500
Write a formula for the cost function c(a) for a greater than 500 KWHS.
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