Answer:
5a-7=24
5a=24+7
a=31/5
Step-by-step explanation:
The final elevation from sea level of the first climber is the difference of the elevation of the peak and the number of feet he descended to meet his fellow climber,
e = 14,090 ft - 490 ft
e = 13,600 ft
Thus, the answer is letter C. 13,600 ft.
Area = pi * r^2
Area = pi * 12^2 = 452.39 square units
Circumference = 2(pi) * r
2 * pi * 12 = 75.40 units