The electric usage for a computer repair company was charted over four months. What
is the rate of change for the bill during that time?
KWH used
C
535
1,020
1,367
1,768
C
Billing
$96.30
$183.60
$246.06
$318.24
A. $0.52 per KWHC B. $0.18 per KWH
C. $0.77 per KWHC
D. $1.91 per KWH
