Answer:
The correct answer is D, 0.20. You add the probabilities of either situation occurring and subtract the probability of both of them occurring.
Step-by-step explanation:
0.25 + 0.08 - 0.13 = 0.20
Let x=3.77777777...
10x=37.777777777...
9x=10x-x=34
9x=34 so x=34/9=3 7/9
The answer is the first answer choice

Step-by-step explanation:
find the value of the constant of proportionality k

c =total cost
d =days