Use an appropriate identity to find the exact value of the expression.tan 
A. 
B. -2 - 
C. 
D. 2 + 
Answer: D
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Factor completely.7x8 - 1792
A. 7(x4 - 16)2 B. 7(x4 + 16)(x4 - 16) C. 7(x4 + 16)(x2+ 4)(x + 2)(x - 2) D. (7x4 + 112)(x2+ 4)(x + 2)(x - 2)
Solve the system of equations by the substitution method. If the system does not have a single ordered pair as a solution, state whether the system is inconsistent or dependent.6x + 9y = -42-3x + 4y = 21
A. (-8, 1) B. (-7, 0) C. (-7, 1) D. No solution; inconsistent
Graph the function. State the domain and range.y = x2 - 3
A. 
Domain: ? Range: y ? -3
B. 
Domain: x > -7 Range: ?
C. 
Domain: ? Range: y ? -3
D. 
Domain: ? Range: ?
Translate the following statement into symbols. ? Dinner includes soup and salad, or the vegetable of the day. ? Use p for soup, d for salad, and v for vegetable. ?
A. ?
B. ?
C. ?
D. ?
E. ?