A company performed power tests on a set of batteries of the same type. The company 10 determined that the equation y = 100 - 8.9x, where x is the number of hours of use and y is the percent of battery power remaining, models the battery life. Based on the equation, what is the best prediction of the percent of remaining power for a battery after 11 hours of use?

Question

Mathematics

Rene Montoya

27 June, 00:58

A company performed power tests on a set of batteries of the same type. The company 10 determined that the equation y = 100 - 8.9x, where x is the number of hours of use and y is the percent of battery power remaining, models the battery life. Based on the equation, what is the best prediction of the percent of remaining power for a battery after 11 hours of use?

+4

Answers (1)

Know the Answer?

Blimpie · Answer 1

For this case we have the following equation:

y = 100 - 8.9x

Where,

x = the number of hours of use

For 11 hours of use we have x = 11.

Substituting:

y = 100 - 8.9 * (11)

y = 2.1%

Answer:

the best prediction of the percent of remaining power for a battery after 11 hours of use is:

y = 2.1%