You can determine the actual markdown by changing the percentage to a decimal then multiplying it by the price to find your mark down.
First number is x and second number is y
(x,y)
So first and last are correct
at first we write each one as a sequence
and find its equation
the first table
-19, -11, -3, 5
8x-19
the third table
15,12,9,6
-3x+15
the second table
-1. 5,1.5,3,4.5
+3 +1.5 +1.5
so the third table is the nonlinear function
I think the equation would be 4x + 16= 56
She rented the kayak for 10 hours.