Answer:
40 hours
Step-by-step explanation:
Lets take "x" as the # of hours it takes the lava to reach the sea
since there is a lava flow of 0.5 kilos per hour
we will multiply "x" with 0.5
0.5x
now the tube system is 20 kilometers long
this means that at a rate of 0.5 kilos per hour the lava will reach the sea once it is 20 kilometers deep
so
0.5x=20
divide "0.5" by both sides to eliminate the coefficient

x=40
it will take 40 hours for the lava to reach the sea
Hope this helps!
Answer:
- C. The function is never increasing
Step-by-step explanation:
According to the graph, the line goes down in both sections as the value of x increases. It means the function is always decreasing.
<u>Correct answer choice is:</u>
- C. The function is never increasing
Answer:
slope = -2
Step-by-step explanation:
Slope formula: 
Given points:
(3 -4) = (x1, y1)
(-2, 6) = (x2, y2)
To find the slope, input the given points into the slope formula:

Solve:
6 - (-4) = 6 + 4 = 10
-2 -3 = -5
Simplify:

The slope is -2.
Answer:
6
Step-by-step explanation: