Evaluate the expression for the given replacement values.x - y
for x = 3, y = 18
A. 21
B. 15
C. -15
D. -21
Answer: C
Mathematics
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Express the given function as a composite of functions f and g such that y = f(g(x)).y = 
A. f(x) = 
, g(x) = x2 - 4
B. f(x) = 
, g(x) = - 
C. f(x) = 
, g(x) = x - 4
D. f(x) = 
, g(x) = x2 - 4
Mathematics
Use special right triangles to evaluate the expression.csc 
A. 2
B. 
C. 
D. 
Mathematics
Write the number in scientific notation.In 1997, the total value of imports and exports for France was $36,700,000,000.
A. $3.67 × 1011 B. $3.67 × 109 C. $367 × 108 D. $3.67 × 1010
Mathematics
Solve the problem.Find f(0) when f(x) = x2 + 3x + 7.
A. -7 B. 10 C. 49 D. 7
Mathematics