The sales tax for an item was $6.40 and it cost $320 before tax. Find the sales tax rate. Write your answer as a percentage.

Find an equation of the line perpendicular to the graph.

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?