Answer:9 nickels and 19 dimes.
Step-by-step explanation:
Let 
be the number of nickels Kay has.
Let 
be the number of dimes Kay has.
Value of 
nickel is $
Value of nickels is $
Value of dime is $
Value of nickels is $
Given that Kay has a total of 
coins.
So,
...(i)
Given that Kay has a total value of $
So,
...(ii)
Using (i) and (ii),
From second equation y = 8 - x so
7x + 2(8 - x) = -14
5x = -14 - 16 = -30
x = -6
and y = 8 - -6 = 14
Answer x=-6,y=14
