For the given functions f and g , find the indicated composition.f(x) = 4x2 + 6x + 8,g(x) = 6x - 5(g?f)(x)
A. 24x2 + 36x + 53
B. 4x2 + 36x + 43
C. 4x2 + 6x + 3
D. 24x2 + 36x + 43
Answer: D
Mathematics
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State whether the fractions are equal or not equal.
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A. Equal B. Not equal
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Arrange the quantities in order from smallest to largest.43 km, 340 m, 720 hm
A. 43 km, 720 hm, 340 m B. 720 hm, 340 m, 43 km C. 340 m, 43 km, 720 hm D. 340 m, 720 hm, 43 km
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Solve the inequality and graph the solution set.| x | ? 9
A. (-?, -9] ? [9, ?)
B. [-9, 9]
C. (-?, 9]
D. (-?, -9]
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Solve the problem.How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 250e-0.07t, where t is the time in years? Round to the nearest hundredth year.
A. 17.50 yr B. 88.78 yr C. 9.90 yr D. 78.88 yr
Mathematics