Answer:B
Step-by-step explanation:
3.1x10^9 is putting 9 zero’s behind the 3.1
move the decimal point over 9 spaces which will leave you with 3,100,000,000
= 3.1 Billion
The y intercept of that rule is 0
Answer:
28 
Step-by-step explanation:
21/2 * 8/3 = 28
-4/5 is the skip of the graph
17 + 2 = 19 km is 1/2 of the total length, that is,
19 = (1/2)h
(1/2)h = 19 multiply both sides by 2
h = 2*19
h = 38 km
The total length in kilometers is 38 km