Ratios and proportions
A map has a scale of 1 inch = 20 miles. How many miles are represented by 3.5 inches?
70 miles
2(x+ 3)
2x + 6
Write and solve the inequality:
The sum of a number and 5 is AT MOST 13.
x + 5 (less than or equal to) 13
x is less than or equal to 8
Find the circumference:
Diameter = 8 cm
25.12 cm
A number cube (1–6) is rolled. What is the probability of rolling an odd number?
3/6 or 1/2
A smoothie recipe uses 2 bananas for every 5 strawberries. How many bananas are needed for 15 strawberries?
6 bananas
A number x is decreased by 8 and the result is 20. Write and solve the equation
x - 8 = 20
x = 28
Graph the solution
2 (x- 1) is greater than -4
x is greater than -1
find the area
Diameter = 10
78.5 units squared
Find the median of: 4, 7, 1, 9, 3
4
If 3 notebooks cost $7.50, how much would 5 notebooks cost?
$12.50
x = 15
2x + 10 =
30
graph
-x is less than 4
x is greater than -4
A triangle has angles of 90 degrees and 35 degrees. What is the third angle?
55 degrees
Find the mode:
4, 7, 8, 9, 2, 4, 1, 4, 8
4
A 16-ounce drink costs $2.40. What’s the unit rate in cost per ounce?
$ .15
Write an expression for “7 more than twice a number x
2x+ 7
7 less than the opposite of x is less than or equal to 6
x is greater than or equal to -13
A rectangle has a width of 5 and a length of 4. What is the perimeter?
18 units
A bag has 3 red, 5 blue, and 2 green marbles. What’s the probability of drawing a red marble?
3/10 or 30%
Write an equation to represent: “y is directly proportional to x, and y = 18 when x = 6
y = 3x
Evaluate
(3x + 12) / 3 = 9
x = ?
x = 5
graph
-4 - x/2 is less than 8
-x is less than 24
x is greater than -24
A rectangle has a width of 5 and a length of 4. What is the area?
20 units squared
What is the probability of picking a yellow from the following bag:
3 red, 2 yellow, 7 green
1/6