Which equation has no solution?
• |4x - 2| = -6
• |-2 - x| = 9
• |3x + 6| = 6
• |-2x + 8| = 0

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81