The bridgeport water department has a monthly service charge of $12.90 and a usage charge of $1.57 for every 100 cubic feet of water. which of the following equations can be used to determine the monthly water bill of a bridgeport resident? (let x represent the amount of water used in hundreds of cubic feet and y represent the monthly cost.) a. y = 1.57x + 12.90 b. y = 1.57x - 12.90 c. y = 14.47x d. y = 0.0157x + 12.90

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies