Aheated piece of metal cools according to the function c(x) = (.5)x − 9, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = −x − 2. what will be the temperature of the metal after five hours?

Temperature = -15.96 degree  

Step-by-step explanation:

Given : A heated piece of metal cools according to the function where, x is measured in hours.

A device is added that aids in cooling according to the function .

To find : The temperature of the metal after five hours.

Solution :  and  

First we find the total device or function used to cool the heated piece f(x)

Temperature of metal after five hours ⇒ x=5

Therefore, temperature = -15.96 degree

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: