Which of the following is a monomial?
a) 3x2+2x-1
b) 2x-1
c) 3x+4
d) 4

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?