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? −7° celsius 6° celsius 9° celsius 16° celsius

9 degrees celsius, hope this helped!

9° Celsius

Step-by-step explanation:

Given,

The heated piece of metal cools according to the function,

After adding the device that cools according the function,

The new function that shows the final temperature of the metal,

 ( Let )

Hence, the temperature of the metal after five hours would be,

Third Option is correct.

answer:

(-8,7)

explanation:

we know that  

f

(

−

3

)

=

7

therefore, if we wish to get the output as 7, in the function, we need to have our input to be -3.

looking at the function  

f

(

x

+

5

)

, what should the value of x be, such that the input in the function becomes 7?

we simply equate the terms,

x

+

5

=

−

3

x

=

−

8

thus, the point on the new function would be  

(

−

8

,

7

)

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

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