A hiker starts at an elevation of 20.75 feel below sea level. he hikes up at a constant rate for 18 minutes at stoped at an elevation of 28.75 feet above sea level to take a picture. After that, he hikes down at a constant rate that is 15 feet per hour faster then before. What is the hikers elevation, in feet, 20 minutes after he stops to take a picture?

show us the picture

step-by-step explanation:

show the !

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6

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then i might be able to .