What is the axis of symmetry of the function f (x) = - (x + 9) (x - 21)

Write - 4-10 in addition

City Community College plans to increase its enrollment capacity to keep up with an increasing number of student applicants.

How many grams are in 45 cups?

during a sale a dress is marked down for a selling price of $90 to a sale price of $81 what is the percent markdown

If the ratio of purple to red bikes is 8 to 12 and there are 100 bikes, how many are purple

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.