Someone plz help me ASAP PLZ PLZ PLZ

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Taylor wants to paint his rectangular deck that is 41 feet long and 24 feet wide. a gallon of paint covers about 350 square feet. how many gallons of paint will taylor need to cover the entire deck? round your answers to two decimal places when necessary.

What is the equation of a line that passes through points (0, 4) and (-4,-8)?