Figure out unknown angle

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?

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.