Sam visits the Cookie Store and spends a total of $6.40. Raisin cookies sell for 30¢ each and chocolate chip cookies
sell for 25¢ each. He buys 3 more raisin cookies than
chocolate chip cookies. Which system of equations best
represents the situation if C represents the number of
chocolate chip cookies and R the number of raisin cookies?

ummm seems that u didnt post the attachement !

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