18
Select the correct answer.
The daytime temperature in Apple Valley is falling by 2.5 degrees each day. What will the net change in the daily temperature be after one calendar week?
A.
-2.5 degrees
B.
2.5 degrees
C.
-4.5 degrees
D.
-17.5 degrees
E.
17.5 degrees

The correct answer is D.

Have a good day! :)

Step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c