Question

1. complete the table:
2. simplify

Explanation:

Step1: Calculate final elevation A

$+400 + 300 = 700$

Step2: Calculate final elevation B

$+400 - 150 = 250$

Step3: Calculate final elevation C

$+400 - 400 = 0$

Step4: Calculate change for D

$+510 - (+400) = 110$ (110 up)

Answer:

	starting elevation (feet)	change (feet)	final elevation (feet)
B	+400	150 down	+250
C	+400	400 down	0
D	+400	110 up	+510