What is $40 with a 30% markup?

He graph represents one side of the roof of a building. The slope of the line is

The low temperatures in Detroit for six days in February were - 7˚C, - 3˚C, 0˚C, 2˚C, - 3˚C, and 5˚C. What was the average low temperature for these six days?

The French mathematician Pierre de Fermat (1601-1665) considered the sequence 5, 17, 257, 65537,

Express cos^2 x in terms of cos2x. Hence, express f (x) = 6cos^2 x - 4sin 2x in the form R cos (2x + Y degrees) + p where R, y and p are constants. Find the maxium and minimum values of f (x) and sketch its graph in the domain - 180 < = x < = 360

On simplifying (-3y2 - 8) - (-5y2 + 1), we get y2 -.

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.