A store is selling ribbon by the yard. Mike bought 8 yd of red ribbon. Each yard cost $3.50. complete and solve the working equation that represents the amount, a, Mike paid for buying 8 yards of ribbon.
The amount Mike paid for buying 8 yards of ribbon can be calculated by multiplying the number of yards (8) by the cost per yard ($3.50).
Let a represent the amount Mike paid.
a = 8 * 3.50
Simplifying the equation, we get:
a = 28
Therefore, Mike paid $28 for buying 8 yards of ribbon.