A store selling Ribbon by the yard mike bought 8 yards of red ribbon each yard cost $3.50 complete and solve the working equation that represents the amount. ,a, Mike paid for by in 8 yards of ribbon.

The amount Mike paid for the 8 yards of ribbon can be represented by the equation:

Amount paid = Number of yards * Cost per yard

Let's assign a variable to represent the amount paid, say "a". We know that Mike bought 8 yards of ribbon, and each yard cost $3.50. Plugging these values into the equation, we get:

a = 8 * $3.50

Now we can solve for "a":

a = 8 * $3.50
a = $<<8*3.5=28>>28.