Given:
The inequality is
.
To find:
The graph of the given inequality.
Solution:
The inequality is

The related equation is

For x=0,



For y=0,




So, the related line passes through two points (0,-4) and (-2,0).
Sign of inequality is <, so the related line is a dotted line and shaded region is below the related line.
Therefore, the correct option is B.
All 10 because none of them left the tank lol
Answer:
Grandfather age = 20 * 4 = 80
Step-by-step explanation:
Let Elena age be x
grandfather age is 4x
x + 4x = 100
5x = 100
x = 100/5 = 20 = Elena age