Aperson on a moving sidewalk travels 21 feet in 7 minutes. the moving sidewalk has a length of 180 feet. how long will it take to get to the end

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

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Varies inversely with x. if y=8.5 when x=-1 find x when y=-1