Find the axis of symmetry of the given function.f(x) = -2x2 + 5x + 1
A. x = - 
B. x = 
C. x = 
D. x = - 
Answer: B
Mathematics
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Graph the given number, its negative, and its complex conjugate one the coordinate grid.4 + 5j
A. 
B. 
C. 
D. 
Mathematics
Find the product. Write the product in rectangular form, using exact values.[7(cos 120° + i sin 120°)] [2(cos 90° + i sin 90°)]
A. 5
- 
i
B. -7
- 7 i
C. 7
- 28 i
D. 14 - 14
i
Mathematics
Solve the equation for the specified variable.P = 
for r
A. r = P - tA
B. r = 
C. r = 
D. r = 
Mathematics
Factor the polynomial as the sum or difference of two cubes.x3 - 729
A. (x - 9)(x2 + 81) B. (x + 9)(x2 - 9x + 81) C. (x - 9)(x2 + 9x + 81) D. (x + 729)(x2 - 1)
Mathematics