What is 4x + 27 = 10x - 33

multi-step equations

Y=x/3 What is the constant of proportionality?

The population of a city in 2005 was 18,000. By 2010, the city's population had grown to 45,000. If the population growth follows a exponetial model, what is the projected population for 2015?

What is the area of a square with side lengths of 9 feet? 81 ft 81 ft2 36 ft2 36 f

Jessica wants to serve 3/4 of a pint of orange juice to each of her guests. Her juice jar can hold 12 full pints of juice. How many guests can Jessica serve juice to?

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing four red marbles, three green ones, four white ones, and three purple ones. She grabs five of them.

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.