Interpreting negative rates
1a. A dolphin is at the surface of the ocean. What is the dolphin’s elevation?
0
4a. (-8) * 2/4
-4
4k. 24 divided by 2/4
48
4c. 1.25 + 9.33
10.58
If I am traveling at 45 miles per hour and have been on the road for 2 hours. How many miles have I driven?
90 miles
1b. The dolphin dives 20 feet below the surface of the ocean. What is its new elevation?
-20 ft below the surface
4b. (-6)* 6/4
-9
4L. 16.24 divided by 4
4.06
4d. 19.32 + 98
117.32
7. I am filling a pool up with water. The pool has a capacity of 80 gallons. The hose is filling the pool at a constant rate of 5 gallons per minute. How long will it take to fill the pool?
16 minutes
3. When a construction worker is on a platform 60 feet above the ground, we can describe her elevation as +60 feet. If she is 60 feet below the ground it would be _________
-60 ft below the ground
4h. 7.45 * 3.1
23.095
4e. 12 divided by ⅓
36
4j. 3x+(-12)=24
12
-2.4 - (-9.5)
7.1
a. A construction worker digs down to 130 feet below the surface of the ground. What is her elevation?
b. The construction worker then climbs back up 60 feet below the surface of the ground. What is their final elevation?
a. -130 below the surface
b. -70 ft below the surface
4I. 1.11 * 2.1
2.331
32.6 divided by 4
8.15
4f. 60 - (-12)
72
5. A scuba diver is diving at a constant rate when her team on the surface requests a status update. She looks at her watch which says her elevation is 18 feet below sea level. 8 seconds later, her elevation is 20 feet below sea level.
a. -1/2 ft per second
b. 120 more seconds
2. Andre received $50 and spent money in the following ways last month. For each example, write a positive or negative number to represent the change in money from his perspective.
Do A, B, C, D to receive full points
a. +$50
b. -$20
c. -$10
d. $85 is his final balance
a negative times a negative gives me a __________
a positive times a negative gives me a __________
negative
negative
0.981 divided by 3
0.327
4g. 2.3+(- 4.5)
-2.2
What formula do we use when looking for position, a rate, or time for something?
D=RT