Mathematics Worksheet With Answer Key - Grade 8, Mcas, 2015 Page 16
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20Mathematics
Session 2
ID:301685 WTJ033robotreports.eps A Common
●
The students at a middle school want to hire a DJ for an end-of-the-year dance. The information
20
below can be used to find the total cost of hiring a DJ at each of four different companies.
Awesome Entertainers
Turntable Tunes
y
Number
Cost
of Hours
(in dollars)
300
250
1
200
200
2
240
150
(2, 160)
100
3
280
50
4
320
x
0
1
2
3
4
Number of Hours
Cool Beats
Rock-N-Sounds
The cost of hiring a DJ is
$300 plus
represented by the equation
an additional
$35 per hour
c = 45h + 250,
where c is the total cost, in dollars,
and h is the number of hours
the DJ works.
Which company’s cost has the greatest rate of change?
A. Awesome Entertainers
B. Cool Beats
C. Turntable Tunes
D. Rock-N-Sounds
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