Question

amy hikes down a slope to a lake that is 10.2 meters below the trail. then amy jumps into the lake, and swims 1.5 meters down. she wonders what her new height is relative to the trail. which of the following equations matches the situation above? choose 1 answer: a 10.2 - 1.5 = ? b -10.2 + 1.5 = ? c -10.2 - 1.5 = ?

Explanation:

Step1: Define height below trail as negative

The lake is 10.2 meters below the trail, so its height relative to the trail is - 10.2 meters.

Step2: Consider swimming down further

Amy swims 1.5 meters down from the lake - level. Since she is going further down, we subtract 1.5 from the height of the lake relative to the trail. So the equation is -10.2 - 1.5.

Answer:

C. -10.2 - 1.5 =?