She's be using 12 cups of sugar. Heres the explanation to how i got that, i figured out what number 16 would multiply by to get 64 which was 4, so then i also multiplied 3 by 4 which is how i got 12. Hope this helps
Combine like terms
Reorder the terms.
10x - 12y (+12y) + 8
-12y + 12y = 0
10x + 8 is your answer (as 8 does not have an x)
hope this helps
First you need to fine the slope
3,1
4,4
The slope with be m= 3
then put it in point slope from
y-1=3(x-3)
y-1=3x-9
y=3x-8
so the answer with be "A"
So you use 40 gallons of water *PER* day.
Average water use in Dec?
(hint: in math * means multiplication)
Dec. has 31 days
so
40 * 31
1240
Average water use is 1240 gallons
Hope this helps :)