-7•-7+4(-7)-2

I need help for the class im failing

19

Step-by-step explanation:

-7*-7 + 4(-7) -2

= 49 - 28 - 2

= 21 - 2

= 19

2nd one in the first row is correct

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