Complete question :
A dolphin starts at an elevation of -16 3/4 feet. He kicks 5 times and increases his elevation by the same amount for each kick. He is now at an elevation of -5 1/4 feet. Which equation can be used to find x, the number of feet the dolphin traveled with each kick?
Answer:
2 3/10 feets
Explanation:
Initial elevation = - 16 3/4 feets
Number of kicks = 5
Increase in elevation is the same for each kick
Final elevation = - 5 1/4 feets
Number of feets, x, dolphin travels per kick ;
Total elevation achieved after 5 kicks : ; change in elevation
Final elevation - initial elevation
16 3/4 - 5 1/4
67 /4 - 21/4
(67 - 21) / 4
= 46/4
Since change in elevation per kick is the same;
Number of feets traveled per kivk is ;
x = 46/4 ÷ 5/1
x = 46/4 * 1/5
x = (46*1) / (4*5)
x = 46/20
x = 2 6/20 = 2 3/10
Dolphin travels 2 3/10 feets per kick