Which of the following functions represent exponential decay?

y = 2x

y = - 2x

y = 1/2^x

7 = 2^0.5x

Bryan drives at an average speed of 60 miles per hour. At this rate, it will take him 3 hours to drive miles.

What is the first quartile

144% of what number is 33

The product of two whole numbers is 378 and their sum is 41. What are the two numbers?

Pedro created a scatterplot and a trend line for data that he collected by comparing the number of minutes playing a game and the number of levels passed. Video Game Y=0.49x-0.

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.