Answer:
![Balance = \$21](https://img.qammunity.org/2022/formulas/mathematics/college/ncb05v1gqj03oj20rmsicyn2bbl9h8hgq0.png)
Make a withdrawal of $21
Explanation:
Given
![Beginning = \$50](https://img.qammunity.org/2022/formulas/mathematics/college/vxzvvs0zp0nf70ga2su5uzf39v341xc88y.png)
(2 checks)
![Withdrawal = \$5](https://img.qammunity.org/2022/formulas/mathematics/college/40q7tn9fck8006samzgoqosmkdmwr6k5wx.png)
![Deposit = \$22](https://img.qammunity.org/2022/formulas/mathematics/college/asm8aop7jl7n8y8u1h55783d3bu8xk9g1o.png)
Solving (a): Show final balance
The transaction can be expressed as:
![Balance = (Beginning + Deposit) - (Withdrawal + Checks * Number\ of\ checks)](https://img.qammunity.org/2022/formulas/mathematics/college/snndjadcl0j5hl8xgkii3jlycemvpdz7na.png)
i.e.
Add cash inflow
Subtract outflow
This gives:
![Balance = (\$50+ \$22) - (\$5+ \$23* 2)](https://img.qammunity.org/2022/formulas/mathematics/college/6v33u6fk8qbf6d70jbwe5b54r4yyu9cw2x.png)
![Balance = (\$50+ \$22) - (\$5+ \$46)](https://img.qammunity.org/2022/formulas/mathematics/college/8u7w25bgp6hvnzdrjol2ik55s6qfzooij9.png)
![Balance = (\$72) - (\$51)](https://img.qammunity.org/2022/formulas/mathematics/college/kd6guwsccy7wb0l0zp630p7k0vgat28y8l.png)
![Balance = \$72 - \$51](https://img.qammunity.org/2022/formulas/mathematics/college/u2get0dsvmwlba954rjd9mm9oud6z2cjoa.png)
![Balance = \$21](https://img.qammunity.org/2022/formulas/mathematics/college/ncb05v1gqj03oj20rmsicyn2bbl9h8hgq0.png)
Solving (b): Get account balance to 0
To get his account to 0, he needs to make a withdrawal of the exact amount in his account (i.e. $21)
So, all he needs to do is to make a withdrawal of $21