Find the indicated composition.f(x) = 4x2 + 5x + 7; g(x) = 5x - 8Find (g ? f)(x).
A. (g ? f)(x) = 4x2 + 5x - 1
B. (g ? f)(x) = 4x2 + 25x + 27
C. (g ? f)(x) = 20x2 + 25x + 27
D. (g ? f)(x) = 20x2 + 25x + 43
Answer: C
Mathematics
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Find the work done by a force F = i+5j+7k that moves an object from the point (3,0,5) to the point (7,5,10) along a straight line. The distance is measured in meters and the force in newtons.
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Mathematics
Write a formula for the nth term of the arithmetic sequence. Use the formula to find the 20th term of the sequence.2, 8, 14, 20, 26, . . .
A. an = 6n - 4; a20 = 116 B. an = 6n - 2; a20 = 118 C. an = 4n - 6; a20 = 74 D. an = 4n - 2; a20 = 78
Mathematics
Write the number in scientific notation.0.0000000408016
A. 4.08016 × 10-8 B. 4.08016 × 10-7 C. 4.08016 × 10-9 D. 4.08016 × 108
Mathematics