Find the balance in the account. $800 principal earning 7%, compounded annually, after 4 years
2 answers:
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We can model this situation as a system of linear equation, where n is the number of nickels and q is the number of quarters.
Solving the system of equations, there are 67 nickels and 19 quarters.
Solving the system of equations, there are 67 nickels and 19 quarters.
Answer:
y = x
Step-by-step explanation:
Given that the quantities vary directly then the equation relating them is
y = kx ← k is the constant of variation
To find k use either of the 2 given points
Using (12, 9), that is x = 12 when y = 9, then
k = =
=
y = x ← equation of variation