we know that
the formula to calculate the slope between two points is equal to

in this problem we have

substitute the values in the formula



therefore
<u>the answer is the option</u>

Answer:40 feet.
Step-by-step explanation:
Traffic sign is 8 feet.
It's shadow is 10 feet.
Traffic sign is,
8/10=0.8 times of shadow.
So, the phone is,
50*0.8
=40 feet.
I believe the answer is 0.22