Solve the system by substitution. x + 8y = 44-3x + 8y = 60
A. (-3, 5)
B. (4, 5)
C. No solution
D. (-4, 6)
Answer: D
Mathematics
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Simplify.
+ 
- 
A. 
B. - 
C. 
D. - 
Mathematics
The graph of a function f is given. Use the graph to answer the question.What is the domain of f?
A. {x|-60 ? x ? 55} B. {x|x ? 0} C. {x|-50 ? x ? 50} D. all real numbers
Mathematics
Solve the problem.The number of dislocated electric impulses per cubic inch in a transformer when lightning strikes is given by D = 3100(4)x, where x is the time in milliseconds of the lightning strike. Find the number of dislocated impulses at 
and 
A. 3100; 3,174,400 B. 12,400; 3,174,400 C. 3100; 793,600 D. 3100; 62,000
Mathematics
Find f(x) and g(x) such that h(x) = (f ? g)(x).h(x) = 
A. f(x) = 
, g(x) = -19x2 + 50
B. f(x) = 
, g(x) = 
C. f(x) = -19x2 + 50, g(x) = 
D. f(x) = 
, g(x) = x2
Mathematics