Given that
a = -1, b = -2 and c = -1
work out
2b — Зас

your answer   is -7. hope it helps

Step-by-step explanation:

2b-3ac=2*-2-3*-1*-1=-4-3=-7

you already gave the answer

step-by-step explanation:

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