Please help me with this logic problem I am struggling , its propositional logic or predicate logic.

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles