If the wage is larger than the marginal revenue product of labor then the profit maximizing firm will

decrease the units of labor

Explanation:

The marginal revenue product is basically the market price of the extra goods or services produced by employing one additional unit of resources (in this case labor). If hiring an additional unit of labor results in a higher MRP than the cost of labor, then the company will keep adding labor until the cost of labor is higher than the MRP generated by that unit of labor.

E.g. A worker earns $100 per day. He can produce 40 units and each unit is sold at $5. Since the MRP of labor is higher than the cost of labor, more workers will be hired. But eventually, a worker will only be able to produce 20 or less units (law of decreasing marginal returns), and the MRP will be less than the cost of labor. At that point, the worker will be fired.

its kinda hard to answer this when we dont have all the information that we need.

you will have $2593.74 in 10 years if you set aside $1,000 at 10%

you will have $9321.91 in 20 years if you set aside $2000 at 8%

you will have $1469.32 in 5 years if you set aside $1000 at 8%

you will have $1296.87 in 10 years if you set aside $500 at 10%

you will have $239.66 in 15 years if you set aside $100 at 6%

you will have $4660.96 in 20 years if you set aside $1000 at 8%