Solve. 
> 9
A. x < -16 or x > 2
B. x < -9 or x > 9
C. x < -2 or x > 16
D. -2 < x < 16
Answer: C
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A. 
cos t
B. 
cot t
C. - 
csc t
D. - 
cos t
Perform the indicated operation. Write the answer in standard form.(7 + 7i)(3 + 4i)
A. -7 + 49i B. 49 - 7i C. 28i2 + 49i + 21 D. -7 - 49i
Identify the basic feasible solution corresponding to the given simplex tableau. x1 x2 x3 x4 M
A. x1 = -22, x2 = -22, x3 = 37, x4 = 29, M = 0 B. x1 = 11, x2 = 11, x3 = 1, x4 = 0, M = 0 C. x1 = 0, x2 = 0, x3 = 37, x4 = 29, M = 0 D. x1 = -22, x2 = -22, x3 = 0, x4 = 0, M = 1
Solve the problem.Find the pH of a solution with a hydrogen ion concentration of 10-4.3 moles per liter.
A. -4.3 B. 9.9 C. 5.7 D. 4.3