Answer:
2.6
Step-by-step explanation:
81/15 -> 5.4
-14/5 -> -2.8
when you add a negative it is the same as subtracting the positive value (positive 2.8) and you get 2.6 :)
13/5 and/or 2.6
15x+10x=12x+90; ⇔ 13x=90;
5.26 X 10^-3
24 per day
'x' = days, so since 24 is with x, the rate of change is 24
I'm not sure what the answer choices are but that would seem like a piece of sketch paper.
It's the second and third one!!
