Question

Morena, a scuba diver, used the expression below to describe her position in relation to sea level. 0 + (–15) + 6 Which statement could describe the diver's movements? Morena started at 15 feet below sea level, then dove down 6 more feet. Morena started at 15 feet above sea level, then dove down 6 more feet. Morena started at sea level, dove down 15 feet, then dove down 6 more feet. Morena started at sea level, dove down 15 feet, then rose up 6 feet.

Answer 1

mirena started at sea level, dove down 15 feet then rose up 6 feet

Explanation:

she starts at zero the goes up -15 feef and then up 6 feet

Answer 2

Morena started at sea level, dove down 15 feet, then rose up 6 feet.

Explanation:

The expression is composed by three values. The first value indicates the starting point; which is 0, meaning sea level. The second component is -15, this indicates that Morena dove 15 feet below sea level, so she dove down. The third component is 6, this indicate that she drove up 6 feet, so she rose up. The position of Morena should be at 9 feet below sea level. The equation should be:

X = 0 + (-15) + 6

X = 0 - 15 + 6

X = -15 + 6

X = -9 down sea level

X means the Morena's postion