In a random sample, 328 out of 920 12th graders in California smoked marijuana within the last year. Answer questions 1-4, and round to 3 decimal places.

What is (5to the 2nd power-1) : 3

A sweater is on sale for 20% off the original price, x. Which statement explains why x-0.2x and 0.8x can each find the sale price of the sweater? A. A decrease of 2% is the same as multiplying by 80%. B.

Speed multiplied by time = distance traveled True or False

What is the degree of 6g^2h^3k, is it a monomial

What is the vertex form of f (x) = 5x^2 + 20x-16

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.