Which of the following statements about functions is incorrect? a. the domain is always all real numbers. b. each x-value corresponds to only one y-value. c. the range of a function is all the y-values output by the function. d. the same y-value can correspond to more than one x-value.

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.