Factor when possible.25x2 - 49
A. (5x + 7)2
B. (5x + 7)(5x - 7)
C. (5x - 7)2
D. prime
Answer: B
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Solve the problem.To find the height of this tree, Juanita marked the tree at eye level, 1.8 meters above the ground. She measured 39 m from the base of the tree and then held a 5-cm ruler vertically in front of her eye until the ruler just obscured the tree above the mark. Using a string tied through a hole in one end of the ruler, Juanita found that the distance from her eye to the ruler was 5.7 centimeters. What was the height of the tree? Round to the nearest unit.
A. 34 m B. 36 m C. 40 m D. 30 m
Evaluate the expression.(-64)1/3
A. not a real number B. -4 C. 4 D. -64
Solve the problem.A motorcycle and a car leave an intersection at the same time. The motorcycle heads north at an average speed of 20 miles per hour, while the car heads east at an average speed of 48 miles per hour. Find an expression for their distance apart in miles at the end of t hours.
A. 2t
miles
B. t
miles
C. 52
miles
D. 52t miles
Identify the type of graph.
+ 
= 0
A. The graph is the point (8, 4). B. The graph is an ellipse with center at (-8, -4). C. The graph is an ellipse with center at (8, 4). D. The graph is a hyperbola opening right and left.