How do you know if it is a function

What is the average rate of change of the function f (x) = 2x - 3 from x = 4 and x = 6?

You take out a cash advance of $2,790.00 on a credit card with a 3.5% cash advance fee and a 13.5% APR. What is the amount due by the end of the month? $2,920.14 $3,277.48 $2,821.39 $2,887.65

What is 18/60 in simplest form

2 (x + 2) + 3x = 2 (x + 1) + 1 como lo puedo resolver?

True or False: Composite numbers can be written as the product of prime numbers

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.