Which of the sets of ordered pairs represents a function? a = {(3, –5), (4, 6), (–3, 9), (2, 7)} b= {(2, 4), (–1, –7), (5, 6), (4, 3)} (5 points) only a only b both a and b neither a nor b

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Aphrase is shown read the phrase and give me the answer