The probability that the sum will be less than 3 or greater than 6 is

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?