Answer:
Perimeter- 26cm
Area- I Don't know sorry. I'll comment if I figure it out
Maybe it the mixed number form. 2 1/2?
Answer:
Final cost of item = initial price(1 – rate)
Step-by-step explanation:
y(1 – .18) = .82y
So you would plug in 0 for a from the beginning since this is numerical slope definition of a derivative