Topic 1
-45 + 45
0
What is the better deal? 12 oz for $6.80 or 16 oz for $8
16 oz for $8
What percent of 14 is 32?
229%
Evaluate the expression when d=1.2: 3d-4
-0.4
Describe a proportional graph.
Straight line that goes through (0,0)
-16 - (-9)
-7
Hadley paddled a canoe 2/3 mile in 1/4 hour. How fast did she paddle in miles per hour?
8/3 or 2 2/3 mph
At noon, a tank contained 10 cm water. After several hours, it contained 7 cm of water. What was the percent change?
30%
Simplify -3.7 + 5g + 4k + 11.1 - 10g
-5g + 4k + 7.4
Change this fraction to a decimal: 23 4/5
23.8
Is the following number rational? Why or why not?
-16.4545454545...
Yes - repeats
What is the constant of proportionality? y = 2.54x
2.54
Find the percent markdown for an $80 jacket that is on sale for $48.
40%
Expand the expression: -1/3(y - x)
-1/3y + 1/3x
If Hector is 8 years old and Mary is 3 years old, how old will Mary be when Hector is 16?
11
-4 * -8
32
Describe a proportional table.
Edward deposited $6000 into a savings account 4 years ago. The simple interest rate is 3%. How much money did Edward earn in interest?
$720
Factor the expression: 6a + 10
2(3a + 5)
(2x + 5) + (-8x - 4)
-6x + 1
100/-5
-20
A recipe calls for 15 oz of flour for every 8 oz of milk. If you use 15 oz milk, how much flour should you use?
28.125 oz flour
Ria has a container with a volume of 1.5 liters. She estimates the volume to be 2.1 liters. What is the percent error?
40%
(0.25n - 0.3) - (0.8n - 0.25)
-0.55n - 0.05
(-15)+(-39)
-54