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The points (2, r) and (4, -8) lie on a line with slope - 1. Find the missing coordinate r.

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.