How do i solve seventh degree polynomials

the floor in the back of karl's trunk is 6 ft long and has area of 24 ft^2. Karl wants to haul as many boxes on the floor as possible. He cannot stack the boxes or they will fall out as he drives.

You have to pay $32.65 for an item after a 25% markup. What was the original price?

Sam walks from home to his school which is 0.75 miles away in 12 minutes. How fast was he walking?

Find all solutions to the equation 2sin (theta) - sqrt (2) = 0

How many solutions exhaust for the given equation 3 (x-2) = 22-x

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.