Answer:
Picture 3
Step-by-step explanation:
The easiest method is to see if (0,0) is the solution.
1. <em>The line y ≤ -3x + 2 is the line pointing down, and y - x ≥ 2 is the line pointing up</em>, since negative slopes go bottom-right.
2. y - x ≥ 2 --> plug in numbers: 0 - 0 ≥ 2 --> Not true --> the line pointing up's shading will go up, to avoid (0,0) --> <em>Picture 3 is right</em>.
3 (not needed in this situation). y ≤ -3x + 2 --> 0 ≤ 0 + 2 --> True --> The line pointing bottom right has (0,0) --> <em>Picture 2 or 3 is right</em>.
The overlap of possible answers is picture 3.
Answer:
It represents the total amount that Erin is going to spend at the store.
Step-by-step explanation:
Since the percent lost per hour is constant, this is a linear equation, and the slope-intercept form of a linear equation is:
Where <em>m</em> is the slope and <em>b</em> is the intercept.
In this case, we want to formulate how much percentage is left based on how many hours have passed, so the percent left is dependent upon the time passed. This means that the dependent quantity is the percent of battery life left, and this will be variable <em>y</em>.