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Scientific Notation
Real Number System
Equations
Slope and Linear Equations
Systems of Equations
100
A microscopic cell measure 3.8 x 10^-4 centimeters in diameter. What is this number in standard notation?
0.00038
100
Which statement is false? A All Integers are Rational. B All Rational numbers are real numbers. C All Irrational numbers are real numbers. D All Irrational numbers are Rational.
D All Irrational numbers are Rational.
100
Solve for h. -12 = - 2 + h
-10=h
100
What is the slope of a line that passes through (2,3) and (-6, -4)
m=7/8
100
The graph of p = 400 and the graph of p = 50s – 200 intersect at the point (12,400). If the equation p = 50s – 200 represents the profit, p, based on s sales, what does the intersection best represent? A When the sales are 400, the profit is 12. B When the sales are 12, the profit is 400. C The profit is always 400. D The sales are always 12.
B When the sales are 12, the profit is 400.
200
In 2001, box office sales for moviegoers in the United States was $8.4 billion. Which of these is equivalent to 8.4 billion? A 8.4 × 10^9 B 8.4 × 10^-6 C 8.4 × 10^-9 D 8.4 × 10^6
A 8.4 × 10^9
200
Classify the following: -541
Real Rational Integer
200
Solve for the variable 7 k = - 91
k=-13
200
Ann is traveling by bus to see a friend who moved away from her neighborhood. She has been on the bus for 2 hours and has traveled 120 miles. Which equation can be used to show the distance, d, she will travel in hours, t, assuming the bus will travel at a constant speed? A d = 2t B d = 60t C d = 150t D d = 155t
B d = 60t
200
Brenda needs to solve the system of linear equations below for her homework assignment. y = 9x – 70 y = 2x – 32 Which is a reasonable estimate of the solution to this system of linear equations? A (8, –25) B (7, –24) C (5, –22) D (3, –20)
C (5, –22)
300
The diameter of the Sun is approximately 1,392,000,000 meters. What is this length expressed in scientific notation? A 1392 x 10^9 m B 1.392 x 10^9 m C 1392 x 10^6 m D 1.392 x 10^6 m
B 1.392 x 10^9 m
300
Classify the following: 5.25
Real Rational
300
Solve for the variable 4r + 7 = 20
r=3.25 or 3 1/4 or 13/4
300
A plumber charges his customers $90 for each hour he works. If Mr. Hall’s bill for plumbing services is $855, which equation could be used to determine the number of hours the plumber worked? A 855(x) = 90 B 90(x) = 855 C 90 + x = 855 D 855 + x = 90
B 90(x) = 855
300
Find the solution: y = - 3x - 3, y = -3
(0, -3)
400
Which of the following is equivalent to 2,400 x 10,000? A 2.4 × 10^5 B 2.4 × 10^6 C 2.4 × 10^7 D 2.4 × 10^8
C 2.4 × 10^7
400
Classify the following: 5.637294756382...
Real Irrational
400
Solve for the variable 17 - 7z = - 10
z=3.86
400
A boat salesperson earned a commission of $6,000 on the sale of a $30,000 boat. Which statement below identifies a commission with the same rate? A a commission of $7,335 on a sale of a $48,900 boat B a commission of $5,100 on a sale of a $42,500 boat C a commission of $4,200 on a sale of a $21,000 boat D a commission of $5,832 on a sale of a $32,400 boat
C a commission of $4,200 on a sale of a $21,000 boat
400
y = -4/3x + 6, y = 2
(3, 2)
500
An atomic clock that runs on radiation from hydrogen atoms loses 1 second per 1,700,000 years. What is this number of years represented in scientific notation?
1.7 X 10^6
500
Classify the following: 63%
Real Rational
500
Solve for the variable -5a - 3 + 8 = 34
a=-5.8
500
Which of the following sets of ordered pairs lie on a function that is a direct proportion (y is directly proportional to x)? A (2,6) (4,8) (6,10) (8,12) B (2,2) (4,2) (6,2) (8,2) C (2,1) (4,3) (6,5) (8,7) D (2,3) (4,6) (6,9) (8,12)
D (2,3) (4,6) (6,9) (8,12)
500
y = 7/4x - 3, y = 4
(4, 4)