4x^2-30=0 solve quadratic equation

Alexandra has a stand in the marketplace where she sells ground cumin she has a fixed amount of weekly expenses she sells her cumin for $7.20 per kilogram if she sells 90 kg of Cuban weekly net profit is 414 what are Alexandra's weekly expenses?

What is 30% of $1,200 dollars

Two stores sell the same refrigerator for the same original price. Store A advertises that the refrigerator is on sale for 15% off the original price. Store B advertises that it is reducing the refrigerator's price by $150.

51-12 using a number line

Mary had a 3-inch piece of ribbon. She cut it in half. How long were the new pieces?

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.