he graph shows the distance a cyclist traveled in yards (y) as a function of time in seconds (x). The graph is divided into four segments; labeled P, Q, R, and S, respectively. A line graph is drawn on the first quadrant of a coordinate plane. The x-axis is labeled Time in seconds and the y-axis is labeled Distance in yards. The line graph is divided into 4 segments labeled P, Q, R, and S. P starts at the origin and is a straight line slanting up. Q is a line segment that starts at the end of P and is horizontal. R is a straight line that starts at the end of Q and slants up with a steeper slope than P. S is a straight line that starts at the end of R and slopes down to touch the x axis. Which segment shows the cyclist returning to the starting point? (1 point) P Q R S

Which scenarios are most effectively explored by conducting an experiment? there is more than one correct answer. select all that apply. researchers want to study the effectiveness of a particular drug for treating migraines. they want to know which dosage of the drug yields the best results with the least side effects. to ensure fair results, the researchers want to ensure that participants and dosage administrators do not know which dosage participants receive. a teacher wants to plan a class fieldtrip and quickly determine where students prefer to go for the class fieldtrip. a car mechanic wants to know which of two engine brands makes better-performing engines. he wants to test the engines in identical situations and rate their performance in a way that can be fairly measured. a chemist studies the properties of a metal compound. she wants to know how the sample size of the metal affects its ability to conduct electricity. she wants to conduct the research in a controlled environment to minimize bias. a realty company wants to know the average income of its clients. the company wants to gather data income from current clients.