(Desmos Calculator: Ctrl + select to open in a new tab)
Arthur is playing in his room, which is 24.3 feet above ground. He then descends 39.9 feet to the basement, where his uncle is working in his workshop. If ground zero is 0 feet, which number best describes the location of the basement woodshop?
A. -64.2 feet
B. -15.6 feet
C. 15.6 feet
D. 64.2 feet
A. -64.2 feet
To find the location of the basement woodshop, we add the distance Arthur descends to the initial height of the room above ground:
24.3 - 39.9 = -15.6 feet
Therefore, the correct answer is B. -15.6 feet.