Problem-Solving Applications: Mixed Review
5-11Solve each problem and explain the method you used.
0 1. Scientists built earthquake stations at
different elevations. One station is 75 m
above sea level, and a second is 35 m
below sea level. What is the difference
in height between the two stations?0 2. A submarine is at a depth of 300 ft.
What must happen for the submarine
to reach sea level?0 3. How many negative integers are between
4 and 4?0 4. How many integers greater than 10 are less
than 3?0 5. A balloon is 218 m above sea level.
A submersible is 220 m below sea level.
Which is closer to sea level? How much closer?0 6. A diamond-mine entrance begins at
75 ft above sea level. Workers discover
diamonds 48 ft below sea level. How deep
is the mine at that point?0 7. The temperature change from 6 A.M. to 7 A.M.
was 3°C. If the temperature at 6 A.M. was
2°C, what was the temperature at 7 A.M.?- A parachutist opens her parachute at an altitude of
5000 ft. Her change in altitude is 25 ft per second.
a. Write an equation to find her altitude h at a time
after she opens her parachute.
b. How far, written as an integer, has she descended in
12 seconds?
c. What is her altitude 12 seconds after she opens
her parachute? - To map the features of the ocean floor, scientists
take several sonar readings. What is the average
of these three readings they made: 14,230 ft;
14,246 ft; 14,235 ft?
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