Answer:
Correct choice is D
Step-by-step explanation:
The slope of the line
is
Perpendicular lines slopes satisfy the condtion:
then the slope of the perpendicular line is 
The equation in point-slope form of the line that passes through the point (-1, 5) is

1. A
2. D
3. D
Those are the answers I got I hope this helps you!!
Answer:

Step-by-step explanation:
The equation for exponential decay function is given as:

where:
D(t)= difference in temperature t=time
r=rate of change
a =initial value of the temperature
From the given problem:
Initial Temperature,a=50°C
Rate of Decay,r=
Therefore the function for the difference in temperature is given as:


We can convert
to decimal and write the function as:
