The cost, cx), for a taxi ride is given by c(x) = 2x+3.00, where x is the number of minutes. What does the slope mean for this situation?
O A. The taxi ride costs $2.00 per trip.
B. The rate of change of the cost of the taxi ride is $3.00 per minute.
O C. The rate of change of the cost of the taxi ride is $2.00 per minute.
D. The taxi ride costs a total of $3.00.

i know the point slope is y= 1/11x-46/11

approximately 5 hours 32 minutes

let x be the amount of it takes both pumps to fill and 1 pump to empty

so the pumps fill/empty at the rate of per hour

first pump fills at a rate of per hour

second pump fills at a rate of per hour

third pump empties at a rate of per hour

together the reservoir fills at a rate of

+ - =

multiply each term by 720x

120x + 90x - 80x = 720

130x = 720 ( divide both sides by 130 )

x = = 5. hours

(0. × 60 ≈ 32 minutes )

time taken to fill reservoir is 5 hours 32 minutes