25x-25y that is the answer. You multiply the outside variable with the first variable inside the parenthesis. Next, you do the same thing to the other side and that is your answer. (unless you have to do more work)
Answer:
<em>a) She started walking back</em>
<em>b) 0.13 km/min</em>
Step-by-step explanation:
The graph shows the distance traveled by Jo. She starts her journey (t=0) at a distance of 0 Km since the graph passes through the origin (0,0).
a) Ten minutes later she is at a distance of 1 km from the starting point and then the distance starts to drop. This means that at t=10 minutes, she started walking back.
b) To calculate the speed for the last 30 minutes of journey, we find the slope of the line. Select the points (30,0) and (60,4).
If a given line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

Substituting:

v=0.13 km/min
16 * 2 = 32
1 gal. = 2 half gal.
ans:32 days
The first graph is an odd function. y = x
x is to the first power which is odd and it is symmetric across the origin.
The second graph is neither. The parent function is y = x^3 but shifting it down makes it not symmetric to the origin.
The third graph is even. The parent function is
y = x^2. It is symmetric across the y-axis.