I think you forgot to post the figure because i do not see any sort of figure.
Step-by-step explanation:

Therefore ranking them from least to most:

Anna had the biggest change in their bank account because they dropped by $48. The rest of the numbers are closer to zero while -48 is the furthest from zero, therefore it is the biggest change.
Answer:
7238.23
Step-by-step explanation:
v=4/3πrcubed
solve it and get the answer
Answer:
x=2.125
y=0
C=19.125
Step-by-step explanation:
To solve this problem we can use a graphical method, we start first noticing the restrictions
and
, which restricts the solution to be in the positive quadrant. Then we plot the first restriction
shown in purple, then we can plot the second one
shown in the second plot in green.
The intersection of all three restrictions is plotted in white on the third plot. The intersection points are also marked.
So restrictions intersect on (0,0), (0,1.7) and (2.215,0). Replacing these coordinates on the objective function we get C=0, C=11.9, and C=19.125 respectively. So The function is maximized at (2.215,0) with C=19.125.