12 The regular price of an item at a store is p dollars. The item is on sale for 30% off the regular price. Expression W: 0.3p Expression X: 0.7p Expression Y :p – 0.3p Expression 2 :p - 0.7p Which two expressions represent the sale price, in dollars, of the item? A Expression X and Expression Y > B Expression W and Expression X c) Expression W and Expression Y D Expression Y and Expression Z

What is the definition of exponential decay?

The graph represents f(x)=[x]+3. what is f(-2.2)?

Assume that females have pulse rates that are normally distributed with a mean of mu equals 72.0 beats per minute and a standard deviation of sigma equals 12.5 beats per minute. complete parts (a) through (c) below. a. if 1 adult female is randomly selected, find the probability that her pulse rate is between 65 beats per minute and 79 beats per minute. the probability is? b. if 16 adult females are randomly selected, find the probability that they have pulse rates with a mean between 65 beats per minute and 79 beats per minute. the probability is? c. why can the normal distribution be used in part (b), even though the sample size does not exceed 30?