Question

A jar has dimes and nickels. The number of dimes is four less than seven times the number of nickels. Let n represent the number of nickels. Write an expression for the number of dimes.

Answer 1

d = 7n -4

Explanation:

d is number of dimes, n is number of nickels.

7 X number of nickels = 7n.

4 less than that is 7n - 4.

so d = 7n -4.