F (x) = - 2x+3 how do you find x if f (x) = 11

A rectangular playground has a perimeter of 2400 ft. If the length is 3 times the width, find the dimensions of the playground

12 is 48% of what number

The square of 9 less than a number is 3 less than the number. What is the number? - 12 or7 -12 or - 7 -7 or 12 7 or 12

The pendulum of an antique clock has been damaged and needs to be replaced. If the original pendulum completed one swing every 3.2 seconds, how long should the new pendulum be? Round your answer to the ones place. Use The Formula: T=2π√ L/980

What is - 0.84 as a fraction

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.