Researchers want to determine the percentage of students who own iPhones and Android cell phones. They go to a popular spot on campus and ask first 100 students who pass what type of cell phone they own. What type of sampling method is this

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x