In city W, the average cost for a gym membership is given by the equation y=34.99x+49, where y is the total cost, in dollars, for x months of membership. What is the meaning of the y-value when x=1?

Aresearch study is done to find the average age of all u. s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample