What is the value of b? - 3 (x + 2) = 21

It is given that y is directly proportional to x. A 2-column table with 5 rows. Column 1 is labeled x with entries 1, 2, 3, 4, 5. Column 2 is labeled y with entries negative 4, negative 8, negative 12, negative 16, negative 20.

Two coins are tossed, find the probability that only one coin lands on "heads"

Olga worked 37.5 hours last week at tge library and earned $12.50 an hour. if she gets $2.50 per hour raise, how many hours will she have to work to make the same amount of money as she did last week?

A radioactive gas with a half-life of 2.4 days accidentally leaks into a room. If the radiation level is now 25% above a safe amount, for how long should the room be emptied?

Show the work for 625-248

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.