You have explored how to multiply two integers when one is positive and the other is negative. Is the product of a positive integers and a negative integer always is negative? Can you explain and give one example pls

A50% increase followed by 33 1/2% decrease

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Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?