Determining the Monthly Rent. What should Audra charge for monthly rent to make $1,000 profit each year?

Problems 11 and 12 are based on the following scenario: In 1978 Juan bought 50 ounces of gold for $1,750 as protection against rising inflation. He sold half the gold in 1980 at a price of $800 an ounce. Juan sold the other half in 1982 when the price was

$400 an ounce.