A national survey of middle school students asks which subject is most challenging. Which of these samples is a representative sample?

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

Find the zeros of each function. f(x) = 6x^2 - 7x - 20