Solve the problem.Find (fg)(x) given f(x) = 3x + 1 and g(x) = 5x2 - 1.
A. 15x3 - 1
B. 3x3 + 5x2 - 1
C. 15x3 + 5x2 - 3x - 1
D. 15x3 - 3x2 + 5x - 1
Answer: C
Mathematics
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Solve the system using Gaussian elimination. 4x + y = 8 9x + 5y = 7
A. ? B. {(-4, 3)} C. {(3, -4)} D. {(-4, -3)}
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Write the proportion as a sentence.
= 
A. 40 acres is to 11 horses as 5 acres is to 88 horses B. 40 acres is to 88 horses as 5 acres is to 11 horses C. 40 acres is to 5 acres as 88 horses is to 11 horses D. 40 acres is to 5 horses as 88 acres is to 11 horses
Mathematics
Find the unknown value.55 is 125% of what number?
A. 15,625 B. 44 C. 156.25 D. 440
Mathematics
Solve and graph.6x - 7 ? 5 and 4x + 8 ? 20
A. [2,3]
B. [2, ?)
C. (-?, 2] ? [3, ?)
D. [3, ?)
Mathematics