In Exercises 15 and 16, use the following information.
A piggy bank contains only dimes and nickels. The total value in the bank
is $ 4.25.
15. Write an equation in standard form that models the possible
combinations of dimes and nickels in the piggy bank.
16. List two of these possible combinations.
15.
16.
17. Find the equation of the line that is perpendicular to 4y - x = -5
and goes through the point (5,-2).