Starting: 46.75
After 55% discount: 21.04
Total: $21.04
Answer:
0.44444444 or 4/9
Step-by-step explanation:
Since we know the value of
, we can rewrite the equation replacing the variables.

Now solve. While solving, remember the order of operations.
or 
Been a bit since i’ve done this kind of problem.
X+4=20
X is the number of hours needed to work, while 4 is the hours already there.
The answer is C. -0.25; the rate at which Martin's distance from the finish line changes per minute