Solve the problem.The square root expression Rf
gives the aging rate of an astronaut relative to the aging rate of a friend on Earth, Rf, where v is the astronaut's speed and c is the speed of light. An astronaut is moving at 60% of the speed of light. Substitute 0.6c in the expression above. What is his aging rate, correct to two decimal places if necessary, relative to a friend on Earth?
A. 0.63Rf
B. 0.8Rf
C. 0.8
D. 1.17Rf
Answer: B
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Find the vertex and axis of symmetry of the graph of the function.f(x) = x2 - 6x
A. (-3, 9); x = -3 B. (-9, 3); x = -9 C. (3, -9); x = 3 D. (9, -3); x = 9
Find length AB along the roofline of the building in the illustration. The slope of the roof is 49.0 o. Round your answer to the appropriate number of significant digits.
A. 25.0 ft B. 24.4 ft C. 26.1 ft D. 25.5 ft E. 26.4 ft
For the given functions, find the requested function or functional value.For f(x) = 
and g(x) = x - 5, find (g ? g)(x).
A. x B. x - 10 C. x + 3 D. (x - 5)2
Solve the inequality. Describe the solution set as an inequality, in interval notation, and in a graph.
< 
< 6
A. -14 < x < 
; 
B. - 
< x < 14; 
C. -14 < x < 0; 
D. -14 < x < 
; 
