Question

At 6 am, a submarine was located 250 feet below sea level. Fill in the chart below showing its position after each hour until 12 pm. Write an expression showing its original position, overall rise or drop, and final position.

Expression: Original position ± Overall rise/drop = Final position

a) -250 + _____ = _____
b) -250 - _____ = _____
c) -250 + _____ = _____
d) -250 - _____ = _____

Answer 1

To fill in the chart, we need to determine the overall rise or drop for each hour. Using the expression -250 + (rise/drop) = final position, we can calculate the submarine's position after each hour.

Step-by-step explanation:

To fill in the chart, we need to determine the overall rise or drop for each hour. Since the submarine is located 250 feet below sea level at 6 am, we can use the expression: -250 + (rise/drop) = final position. a) -250 + (rise/drop) = final position. At 7 am, the submarine has risen 50 feet, so the expression becomes: -250 + 50 = -200. b) -250 - (rise/drop) = final position. At 8 am, the submarine has dropped 100 feet, so the expression becomes: -250 - 100 = -350. c) -250 + (rise/drop) = final position. At 9 am, the submarine has risen 75 feet, so the expression becomes: -250 + 75 = -175. d) -250 - (rise/drop) = final position. At 10 am, the submarine dropped 25 feet, so the expression becomes: -250 - 25 = -275.