Use the provided graph or table to evaluate the given expression.f(-1)
A. 0
B. -1
C. -2
D. 1
Answer: A
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Fill in the blank with the appropriate measurement relationship.7 day = 
wk
Fill in the blank(s) with the appropriate word(s).
Solve.
- 
= 
A. ±
i
B. ±6i
C. {x|x is a real number and x ? 0 and x ? 6}
D. No solution
Determine whether the function is even, odd, or neither.
y = sin x + cos x (a) even (b) odd (c) neither
Solve the problem.On a Touch Tone phone, each button produces a unique sound. The sound produced is the sum of two tones and is given by 
and y = sin (2?ht), where l and h are the low and high frequencies (in hertz = Hz) associated with that button. 
The tone produced is thus given by y = sin (2?lt) + sin (2?ht). Write an expression that models the tone by pressing the "7" button as a product of sines and cosines.
A. y = 2 sin (357?t) cos (2061?t) B. y = 2 sin (484?t) cos (2188?t) C. y = 2 sin (2188?t) cos (484?t) D. y = 2 sin (2061?t) cos (357?t)