Math 2 Practice Test B

Paul has 2 red marbles, 8 blue marbles, and 5 purple marbles in his bag. What is the probability that he will randomly select one purple marble and one blue marble without replacement?

• 4/21

• 8/39

• 13/40

• 19/21

Two marbles are drawn in succession without replacement from a jar containing 4 red and 3 green marbles. What is the probability that both the marbles drawn are red?

• 4/7

• 16/49

• 2/7

• 12/49

In Lakeview High School, the students who make the honor roll are only those who meet both of these requirements: 1) all Bs or better in academics, and 2) a satisfactory mark or better in conduct. Of all the students in the school, 20% met the first requirement, 25% met the second requirement, and 40% met at least one of these two requirements. What is the probability that a randomly selected student from the school did NOT make the honor roll?

• 0.15

• 0.55

• 0.60

• 0.95

David will launch a model rocket from the ground. Serena will hold a laser light 2 feet above the ground and point it in the path of the rocket. The height, y, in feet, of the rocket can be represented by the equation y = -16x² +32x, where x is time in seconds. The equation that represents the path of the laser light is y = 2.64x + 2. which two times most closely approximate when the laser light will strike the rocket after its launch?

• 0.07 seconds and 1.76 seconds

• 0.07 seconds and 1.90 seconds

• 0.06 seconds and 2.1 seconds

• 0 seconds and 2 seconds

What is the maximum of the quadratic function represented in the graph?

• (0,-4) and (0,0)

• (0,0)

• (-2,4)

• (0,4) and (0,0)

Tags

CCSS.HSF-IF.C.7A

Part of the graph of y = x² + 2x + 1 is shown. Which of the points will the graph intersect?

• Point A

• Point B

• Point C

• Point D

Thomas makes a table listing the values of the functions f(x) = x⁵ and g(x) = 5^x for different values of x. Which of these statements is true?

• f(x) exceeds g(x) for all values of x

• g(x) exceeds f(x) for all values of x

• f(x) exceeds g(x) for all values of x greater than 5

• g(x) exceeds f(x) for all values of x greater than 5

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

The perimeter of an isosceles triangle is 7x + 5y - 8 units, and the length of the based of the triangle is x - y - 2 units. What is the length, in units, of each of the congruent sides of the triangle?

• 3x + 2y - 5

• 3x + 3y - 3

• 4x + 2y - 5

• 6x + 4y - 10

Tags

CCSS.3.MD.D.8

If 3x² + 11x + 5 = 0, then x =

• 
• 
• 
• 

Tags

CCSS.HSA-REI.B.4B

Triangle XYZ is transformed on a coordinate place to obtain its congruent image triangle X'Y'Z'. Which of the following statements could be true?

• only I

• only II

• I, II, and III

• only I and II

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6