Provide an appropriate response.Solve the equation: 5x - 2x = 21
A. x = -7
B. x = 7
C. x = -3
D. x = 3
Answer: B
Mathematics
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Find the vertex for the parabola whose equation is given.y = -x2 - 7x - 9
A. 
B. 
C. 
D. 
Mathematics
Evaluate the integral.
A. 
sin 3x - 
sin 7x + C
B. 
sin5x + 
sin 2x + C
C. 
sin 3x + 
sin 7x + C
D. 
cos 3x + 
cos 7x + C
Mathematics
Divide. Write the answer in lowest terms and as a whole or mixed number where possible.
÷ 
A. 
B. 
C. 1
D. 1
Mathematics
Solve the equation by completing the square.x2 - 14x + 53 = 0
A. -7 ± 2i B. 14 ± 4i C. 5, 9 D. 7 ± 2i
Mathematics