How to solve c/-9+6=14

There were 324 adults surveyed. Among the participants, the mean number of hours of sleep each night was 7.5 and the standard deviation was 1.6. The margin of error, assuming a 95% confidence level, is approximately. Round to the nearest hundredth

Suppose f (x) = x^3. Find the graph of f (2/3x)

The perimeter of a square is 36. What is the length of a side of the square? The length of the diagonal?

During the 2011 season, a quarterback passed for 302 yards per game. he played 16 games how many total yards did he have?

How many different ways could eight students sit in a semicircle to watch an experiment? 40,320 5,040 8

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.