State the domain of the given function.f(x) = 8x2 + 2x - 5
A. {x|x is a real number and x ? 0}
B. {x|x > 0}
C. {x|x is a real number}
D. {x|x ? 0}
Answer: C
Mathematics
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Solve using the substitution method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this.3x + y = 132x + 9y = -8
A. (-5, -2) B. (5, 2) C. (-5, 2) D. (5, -2)
Mathematics
Solve the equation.d + 30 = -7
A. -37 B. -23 C. 23 D. 37
Mathematics
Complete the identity.sin 2x sin 5x cos 2x cos 5x = ?
A. cos2 20x
B. 
C. 
D. 
Mathematics
Write out the sum. Do not evaluate.
A. 1 - 7 - 9 - 9 B. -7 - 9 - 9 - 7 + ... C. -7 - 9 - 9 - 7 D. -7 + 9 - 9 + 7
Mathematics