Answer:
Its B
Step-by-step explanation:
the height above the seal level at the end of the hike is
The computation is shown below:
Hence, the height above the seal level at the end of the hike is
x = 20
angle m<3 + angle m<5 = 180° because these angles are supplementary
5x + 10 + 3x + 10 = 180° add like terms
8x + 20 = 180
8x = 160 divide both sides by 8
Answer: A) 1