What you’re doing is breaking it down into its parts and writing it into an equation that way long hand.
3 + .4 + .00 + .005
Answer:
Step-by-step explanation:

C, A, B
A’s rate if change:
3
B’s rate of change:
(10 - 0) / (-2 - (-4)) = 10 / 2
5
C’s rate of change:
1
Answer:
since the bases (X) are the same only the exponents will be subtracted and b is greater than a to get a negative exponent
Step-by-step explanation:
First you have to distribute. -3y +12=18. -3y=6. y= -2.