What properrty is shown? 4 + (3+2) = 4 + (2+3)

There are 450 students at a school. If each classroom holds 30 students, how many classrooms are needed at school?

18 is what percent of 12?

A riding stable charges $150 per month to board a horse plus $6.75 per bale of hay that the horse eats. What is the maximum number of hay bales that Shiloh eats in a month if his monthly boarding cost is at least $225.00 and at most $255.

Juanita is having a party at her house she is inviting 12 people. there will be 3 times as many boys as girls invited. let x represent the number of girls invited to the party. which equation will you use to find the number of girls invited

What are the values of a, b, and c in the quadratic equation 0 = 1x2 - 3x - 2? a=1, b = 3, c = 2 a = 3, b=-3, c=-2 a=, b = 3, c = - 2 A/N a = 1, b=-3, c = 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.