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SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend Sandy told
him that he should try using Clean-O detergent, a new brand of laundry soap she found at Sail-Mart.
SpongeBob made sure to wash one pair of pants in plain water and another pair in water with the
Clean-O detergent. After washing both pairs of pants a total of three times, the pants washed in the
Clean-O detergent did not appear to be any cleaner than the pants washed in plain water. What is his independent variable?
What is type of laundry detergent?