Write y=-5x^2+15 in vertex form

Write each function in vertex form, and identify its vertex. 14. h (x) = 3x^2-24x+53 15. h (x) = x^2 + 8x-10 16. g (x) = x^2 - 3x+16 17. h (x) = 3x^2 - 12x-4

Solve the equation for principal values of x. Express solutions in degrees. 2 sinx - 1 = 0

At the dog park their are several dogs with their owners. Counting heads, there are 12, counting legs, there are 38. How many dogs and owners are there?

Jamey says she only has 30% of her to go before she finishes it. she has read 147 pages so far. how long is Jamey's book?

Solve the problem - 16 - 8 + 11 - 5 = ? A. - 40 B. - 18 C. 18 D. - 2

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.