is taken from the activities account to buy snacks and materials.

After their sixth meeting, there will be left in the activities account.

a.

If no money is put back into the account, money is left in the activities account after having number of meetings.

Write the equation.

The amount spent for meetings is.

Let be the amount remaining in the account after meetings.

, where is the initial amount in the account.

The amount remaining in the account after meetings is .

Therefore, the initial amount in the account is.

Hence, the equation is .

b.

Find how much money was originally in the account.

The original cost is .

c.

Find the how many meetings will there be no money left in the activities account.

Solve the equation.

                         (Original equation) \ \

                         (Substitute ) \ \

    (Add to each side) \ \

                               (Apply additive inverse property: ) \ \

                          (Divide each side by ) \ \

                                      (Cancel common terms)

After meetings, there will be no money left in the activities account.

a.The equation is .

b.The original cost is .

c. After meetings, there will be no money left in the activities account.