Answer: 5c+3
Step-by-step explanation: divide regularly. Just keep the C after the 10. I'm not good at explain math sorry.
The answer is B. You solve each inequality and you get x is greater than or equal to 1 and x<6 so those two are included in the interval of b. So the answer is B.
X(ab-cd)=15m
x=15m/(ab-cd)
Rate=total cost / time
r=477/3=$159 per day