Nancy leaves the school and drives toward her town at 27 mph. greg leaves the same school 2 hours later and drives the same route at 45 mph. how long will it take greg to pass nancy?

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Why is causation so much more difficult to prove than correlation?