The time to complete a building project is inversely proportional to the number of people working on the job it takes 30 days for 6 workers to complete the job. If they need to complete the job in 20 days, how many workers will they need?

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years