7,000,000+80,000+200+80+7
        
             
        
        
        
The temperature of the ice cream 2 hours after it was placed in the freezer is 37.40 °C
From Newton's law of cooling, we have that 

Where





From the question,


∴ 

Therefore, the equation  becomes
 becomes 

Also, from the question 
After 1 hour, the temperature of the ice-cream base has decreased to 58°C. 
That is, 
At time  ,
, 
Then, we can write that 

Then, we get

Now, solve for 
First collect like terms 


Then, 


Now, take the natural log of both sides 


This is the value of the constant 
Now, for the temperature of the ice cream 2 hours after it was placed in the freezer, that is, at 
From 

Then 






Hence, the temperature of the ice cream 2 hours after it was placed in the freezer is 37.40 °C
Learn more here: brainly.com/question/11689670
 
        
                    
             
        
        
        
 First, turn 12 percent into decimal which is .12
Of = multiple
So now you times .12 times 91 which is 10.92
Answer 10.92 
Hope this help
        
             
        
        
        
These lines are perpendicular!
y = x
y = -x–2
The slopes are reciprocals of each other, so they are perpendicular.