Graph the function over a one-period interval.y = 4 + 4 sin(x - ?)
A. 
B. 
C. 
D. 
Answer: C
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Solve the given trigonometric equation by use of a graphing calculator. Use values of x for 0 ? x < 2?.cos x + cos 3x = sin x
A. 0, 0.26, 1.31, 3.14, 3.40, 4.45 B. 0.61, 3.57 C. 0.61, 2.05, 3.75, 5.17 D. 2.53, 5.68
Solve.A tower has a 35-foot guy wire attached to a pole. If the guy wire is anchored on the ground 21 feet from the base of the pole, how high up the tower is the other end of the guy wire attached? 
A. The guy wire is attached at a height of 280 ft. B. The guy wire is attached at a height of 28 ft. C. The guy wire is attached at a height of 784 ft. D. The guy wire is attached at a height of 38 ft.
Write the augmented matrix for the system. 8x + 3y = 66 2x + 4y = 36
A. 
B. 
C. 
D. 
Find the magnitude of vector v.
?
A. 
B. ?
C. ?
D. ?
E. ?