Answer: 
Step-by-step explanation:
the conjugate is:

The pack of pencils weighs 21.6 grams because 0.9 times 24 is 21.6
I bealive if it is the nature of the slope in unison comparing y-intercept elgebra it is Y=3x-3/4
Answer:
810 is 100 times the size of 0.81