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Four out of five Facebook users report that they have never bought a product or service as a result of an ad on the site.*  What percentage of users have made a purchase as a result of a Facebook ad? * Source: Reuters

State the phrase as a mathematical expression.  Use x to represent the variable.   A number increased by two

Find the slope of the line through the pair of points. (-4, -7)  and  (7,9)

Perform the indicated operation.  Assume that all variables represent nonnegative real numbers.

Simplify the expression. 8a – 2a + 6

Which of these expressions is not a way to calculate 25% of 9100?

Solve the equation. 9n – 5 = 31

Complete the graph by shading the correct region

The temperature at the South pole was -11o at 8 am.  At 3 pm, it was 7o.  By how many degrees did the temperature rise.

A local heating and air conditioning service charges a flat fee for a service call and also charges an hourly fee for the length of time it takes to complete the job.  The table below is a sample of the service charges for various jobs.   What is the flat rate for the service visit?