What is the least number of angle measures you need to know in order to find the measure of every angle? And bty explain the reasoning

How much will the tax be on a $66 meal

1/3 (12x-24) = 16 answer

9x - 7y = - 28 7y - 9x = 28

The cost of an entry ticket to an amusement park is $5 for a child and $8 for an adult. During a given 15 minute period, 120 people entered the park, and the total revenue from ticket sales was $810.

10. Karnika recorded the number of minutes she practiced volleyball each week for several weeks. She used a stem and leaf plot to organize the data. Volleyball Practice Time Stem Leaf 14 0 2 2 15 5 5 16 142 means 142 minutes.

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.