1. After Barnaby turns on his laptop computer in a coffee shop, the computer's battery begins
losing power at a constant rate. The battery
was 40% charged after 2 hours and
10% charged after 3.5 hours. If x is the
number of hours since Barnaby turned on the
computer, and y is the percentage of battery
power remaining, which function models this
situation?
A. y = -0.3x + 0.6
C. y = -0.2x + 0.6
B. y = -0.3x + 0.8 D. y = -0.2x + 0.8
=