Complete the identity.tan4 ? - sec4 ? = ?
A. sec2 ?
B. tan 2 ? - sec2 ?
C. -2 tan2 ? - 1
D. sec2 ? + tan2 ?
Answer: C
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Solve the equation for the unknown quantity.x + 14 = 19
A. -5
B. 
C. 5
D. 33
Decide whether the statement makes sense. Explain your reasoning.Apartments in a new building can either be bought or rented. Gale calculated that it would be cheaper for her to buy. Gale's brother did the same calculations for himself for the same apartment and found that it would be cheaper to rent.
What will be an ideal response?
Find the indicated sum.
A. 54 B. 162 C. 108 D. 81
Simplify the trigonometric expression by following the indicated direction.Factor and simplify: 
What will be an ideal response?