Solve the system by substitution.
A. (3, 9)
B. (-9, 3)
C. (9, 3)
D. (9, -3)
Answer: C
Mathematics
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Solve and simplify.
? x = 171
A. 23 B. 385 C. 171 D. 76
Mathematics
Provide an appropriate response.Write 
with positive exponents only, and as a single fraction reduced to lowest terms.
What will be an ideal response?
Mathematics
Find the average rate of change for the function over the given interval.y = x3 + x2 - 8x - 7 between x = 0 and x = 2
A. 
B. -28
C. - 
D. -2
Mathematics
Determine any data values that are missing from the table, assuming that the data represent a linear function.
A. Missing x: 8; missing y: 16 B. Missing x: 10; missing y: 14 C. Missing x: 9; missing y: 13 D. Missing x: 8; missing y: 15
Mathematics