Solve the problem.A business projects next year's profits to be $19,300,000.Write the number in scientific notation.
A. 1.93 × 10-8
B. 1.93 × 107
C. 1.93 × 106
D. 1.93 × 108
Answer: B
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A PDF for a continuous random variable X is given. Use the PDF to find E(X).f(x) = 
A. 8.28
B. 
C. 
D. 
Find the center and radius of the the circle.(x - 5)2 + (y + 4)2 = 4
A. Center: (5, 4); Radius: 2 B. Center: (-5, -4); Radius: 2 C. Center: (5, -4); Radius: 2 D. Center: (-5, 4); Radius: 2
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log x + log (x +1) = log 90
A. {9}
B. 
C. {10, -9}
D. {10}
For the function find the maximum number of real zeros that the function can have, the maximum number of x-intercepts that the function can have, and the maximum number of turning points that the graph of the function can have. f(x) = - 
x3 + 6x2 + 2x - 5
A. 3; 3; 2 B. 3; 2; 2 C. 3; 3; 3 D. 3; 2; 1