How to simplify 336/3

Jamila babysat nine times. She earned $15, $20, $ 10, $ 12, $20, $16, $80 and $18 for eight babysitting jobs. How much did she earn the ninth time if the mean of the data set is $24?

Kelly is practicing singing for a competition. She starts by practicing for 38 minutes the first day and then increases the time each day by 10 minutes.

9^2 : (2 + 1) * (30 - 3^3) 9^2 : (2 + 1) * (30 - 3^3)

A club decides to sell T-shirts for $12 as a fund-raiser. It costs $20 plus $8 per T-shirt to make the T-shirts. Write and solve an equation to find how many T-shirts the club needs to sell in order to make a profit of at least $100.

Highest common factor of 25 and 180

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.