Answer: Part C is $57.5
Part C: Mai is being charged $5.75 per(1) day and since it takes Mai to pay off her debt the equation would be 5.75 x 10 = 57.5
So $57.5 dollars
The value of K is 5 because its going up 5 from the f(x) graph
R= 18
d=r(2)
36=r(2)
36/2=r(2)/2
18=r