Multiplying integers
(-4)(-5)
20
54/-9
-6
During summer, the height of the water in a pool decreases by 4 inches each week due to evaporation. What is the change in the height of the water over a six-week period?
-24 inches
x / 2y
when x is -24 and y is 12
= -24 / 2(12)
=-24/24 = -1
(-4)2
16
9(-6)
-54
-84/(-12)
7
On a certain day, the temperature changed at a rate of -3 degrees Fahrenheit per hour. How long did it take for the change in temperature to be -33 degrees Fahrenheit?
11 hours
x4 when x is -1
(-1)4 = -1 * -1 * -1 * -1 = 1
-52
-25
-3(2)(-4)
24
100 / (-10)
-10
On a rainy day the amount of rain in a rain gauge increases by 2 inches over a 24-hour period. How much will the amount of rain in the gauge increase by over an 8 day period?
16 inches
x + y2
when y is -4 and x is -10
-10 + (-4)2
= -10 + 16
= 6
4 - 32
= 4 - 9 = -5
(-2)(-3)(-5)
-30
-140 / -2
70
During a 12-hour period, the temperature dropped 48 degrees. How many degrees did the temperature drop each hour?
-4 degrees
-y + x/4
when x is -16 and y is -2
- (-2) + 16/4
= 2 + 4
= 6
5 + (-2)3
= 5 + -8 = -3
110(-100)(-1)
11,000
0 / (-5)
0
During a football game, the Cavaliers were given 3 penalties for 15 yards each. What was the change to their field position due to the penalties?
-45 yards
3x / y
when x is -5 and y is 0
3(-5) / 0 = -15 /0 = undefined (we cannot divide by 0 in math)
-24 + (-2)4
= -16 + 16 = 0