Solve the equation on the interval [0, 2?).sec 
= cos 
A. 
, 
B. 
, 
, 
, 
, 
, 
, 
C. 0
D. 0, 
, ?, 
Answer: C
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Determine the vertex of the graph of the parabola.y = - x2 + 6x - 9
A. (-3, 0) B. (3, 0) C. (0, 3) D. (0, -3)
Evaluate the spherical coordinate integral.
A. 
?
B. 
?
C. 
?
D. 
?
Solve the problem. Use a calculator with an LN or a LOG key.The formula y = 1 + 1.4 ln(x + 1) models the average number of free-throws a basketball player can make consecutively during practice as a function of time, where x is the number of consecutive days the basketball player has practiced for two hours. After 72 days of practice, what is the average number of consecutive free throws the basketball player makes?
A. 7 consecutive free throws B. 11 consecutive free throws C. 8 consecutive free throws D. 10 consecutive free throws
Determine the angle between u and v. Give the angle in degrees rounded to the nearest tenth of a degree.u = -i + 6j, v = 3i - 4j
A. 64.3° B. 152.6° C. 62.6° D. 0.9°