7. Nielsen Media has recently begun attempting to estimate the monthly text usage for cell phone subscribers. In the second quarter of 2018, a random sample of 750 adults, aged 18- 24 was taken, and they were asked to report the number of text messages that were sent in the previous month. Similarly, a random sample of 750 teenagers, aged 13-17, were asked the n

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.