Answer:

Step-by-step explanation:
The exponential function that decrease by 15% every time x increases by 1 is given by:

We simplify the parenthesis to get:

Therefore the decrease by 15% every time x increases by 1 is

The second choice is correct.
Answer to a : 30-19=x but for b i’m not that smart
Answer:

Step-by-step explanation:
Trust me.
Answer:
Step-by-step explanation:
-4y = -5x + 16
4y = 5x - 16
y = 5/4x - 4
perp. -4/5
y + 8 = -4/5(x - 5)
y + 8 = -4/5x + 5
y = -4/5x - 3