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A roller coaster begins at 90 feet above ground level. Then it descends 105 feet.
Find the height of the coaster after the first descent.

Respuesta :

if it descends, it means it goes down/ decreases. so 90-105, will get you to negative 15 (-15)
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Answer:

-15

Step-by-step explanation:

90-(-105)=(-15)

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