A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the approximate number of bulbs that can be expected to last the specified period of time.Less than 690 hours
A. 4857
B. 4853
C. 4860
D. 2357
Answer: A
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Answer the question.If p > 0 and q > 0, what can be said about the convergence of 
?
A. Always converges B. Always diverges C. May converge or diverge
Solve the problem.The stiffness of a rectangular beam is proportional to its width times the cube of its depth. Find the dimensions of the stiffest beam than can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 7.0; d = 12.1 B. w = 8.0; d = 13.1 C. w = 8.0; d = 11.1 D. w = 6.0; d = 13.1
Write log 82.8 = y in exponential form.
a. y = 82.810 b. 10y = 82.8 c. 1082ú8 = y d. y10 = 82.8 e. a82ú8 = 10
Find the slope-intercept form of the line satisfying the given conditions.Through (0, -10) and (-2, 0)
A. y = 
x - 2
B. y = - 
x - 2
C. y = - 5x - 10
D. y = 5x - 10