X^2+13x-30 find the vertex

Suppose you just purchased a digital music player and have put 9 tracks on it. After listening to them you decide that you like 4 of the songs. With the random feature on your player, each of the 9 songs is played once in random order.

five person are sharing 3 pizza so that each person has a fair share. what fraction of a pizza will each person receive?

How do you write 4.7 * 10^-6 in standard form?

The lowest temperature on May 15 is 2 thirds as warm as the warmest temperature on May 15. The lowest temperature on May 15 is 60ºF. What is the warmest temperature on may 15?

36% of a number is 9. What is the number

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.