Respuesta :
You just need to replace x with 5 in each function
.5^5 - 11
-5-3
.5 ^-6
-8
64 - 8 = 56 A Celcius
Hope this helps
.5^5 - 11
-5-3
.5 ^-6
-8
64 - 8 = 56 A Celcius
Hope this helps
Answer:
Option D
Explanation:
A heated piece of metal cools according to the function [tex]c(x) = (0.5)^{x-11}[/tex]
And a device which aids in cooling is added is represented by the function h(x) = -x - 3
Temperature of the metal after x hours will be represented by
c(x) + h(x) = [tex](0.5)^{x-11}+(-x-3)[/tex]
= [tex](0.5)^{x-11}-x-3[/tex]
We have to find the temperature after 5 hours
So c(5) - h(5) = [tex](0.5)^{5-11}-5-3[/tex]
= [tex](0.5)^{-6}-8[/tex]
= 64 - 8
= 56° Celsius
Option D is the answer.
