Use rounding or compatible numbers to estimate the difference

Tania believes that if she increases the price of an item (mark up) by 10% and then decrease it (mark down) by 10%, she will have the original tag price again. Her teacher tells her that her computation is incorrect.

What ate factoring polynomials

Factor 15x^3-6x^2-25x+10 by grouping

A December 2009 poll asked a random sample of people whether they thought their country was heading in the right direction. Each respondent answered "Right Direction" or "Wrong Direction" and was classified as Republican, Democrat, or Independent.

Michela says that the modes of the two data are the same so the median and mean must also be the same. what is michela's error?

Solve ... 2y=3x+6 ... find a b and c ...

Is - 1/6 a rational number?

The graph of f (x) is obtained by translating the graph g (x) = |x| five units down. what is the equation of the graph of f (x)

How many years make up a century? a. 10 b. 100 c. 1000 d. 10000

The stem-and-leaf plot shows the ages of the volunteers at a beach cleanup. How many of the volunteers were less than 20 or older than 40 years old?