Collect like terms.5x9 + 9x9 - 7x9
A. 7x9
B. -315x9
C. 7x27
D. Can't be simplified
Answer: A
Mathematics
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Find the limit.
x ln y
A. ln (3) - 3 B. ln 27 C. 27 D. No limit
Mathematics
Provide an appropriate response.Simplify: 
A. 
B. 
C. 
D. 
Mathematics
Solve.Let f(x) = 9x + 5 and g(x) = 2x2 + 6. Find f(9) - g(9) .
A. -76 B. -81 C. -87 D. -82
Mathematics
Evaluate.(4 + 1)(4 - 1)
A. 16 B. 7 C. 17 D. 15
Mathematics