Solve the problem.Determine whether the ordered triple 
is a solution of the system of equations.9x + 6y + 9z = 56x + 3y - 3z = 14 x - y + 2z = -3
A. No
B. Yes
Answer: A
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Express the number in scientific notation.0.00005763
A. 5.763 x 105 B. 5.763 x 10-4 C. 5.763 x 10-5 D. 5.763 x 104
Evaluate the second derivative of the function for the given value of x.f(x) = 5x2/3 + 
, x = 8
A. - 
B. - 
C. 
D. - 
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Solve the problem by estimating.Enrollment figures at a community college showed an increase from 23,667 credit hours in 2005 to 76,265 credit hours in 2006. Round each number to the nearest thousand to estimate the increase.
A. 53,000 credit hours B. 52,000 credit hours C. 52,600 credit hours D. 52,700 credit hours