Exponents & Rational Numbers
Simplify (43)2
46
Simplify: 3(2x - 4) + 5x.
Answer: 11x - 12
A $60 jacket is 20% off. Sale price?
$48
Scale: 1 in = 25 mi. Map shows 4 inches. Actual distance?
100 miles
Which measure is most affected by an outlier? Mean, Median, Or Mode.
Mean
What fraction equals 0.666666
2/3
-2x + 5 < 15
x > -5
Club grows from 40 to 50 members. Percent increase?
25%
Supplementary angles. One is 110°. The other?
70°
What does Q1 → Q3 represent?
IQR (Interquartile Range)
Evaluate: -15.5 + (-4.2) - (-10)
-9.7
Solve: 3(x - 4) = 18
x = 10
Which equation is proportional?
y = 3x + 2 or y = 5x?
y=5x
Radius = 4 cm. Area? (Use 3.14)
50.24 cm²
Flip a coin and roll a die. How many possible outcomes?
12
Submarine at –150 ft, descends 75 ft, rises 40 ft. New position?
-185 FT
Graph x > -2.
Open circle at - 2 arrow pointing right
f 3 apples cost \$1.50, how much do 7 apples cost?
$3.50
Triangle sides: 6, 8, 10 cm. Perimeter?
24cm
Bag: 4 red, 6 blue marbles. P(red)?
2/5
Order least to greatest: –4.2, –4, –4.15
–4.2, –4.15, –4
"A number decreased by 7 is at less than 15."
x - 7 < 15
A shirt is 30\% off. If the original price was $40, what is the sale price?
$28
Diameter = 10 cm. Circumference? Use 3.14
31.4 cm
Spinner: 2 red, 2 blue, 1 green. P(NOT green)?
4/5