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#36554

applications

functions

linear

hard

90 sec

A certain type of battery discharges over time. The equation below models the approximate remaining charge, $C$ , in milliampere-hours (mAh), of the battery after $t$ hours of continuous use.
$C = 2800 - 150 t$
According to the model, how many hours of continuous use will it take for the battery's charge to drop to 1000 mAh?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.