Find the exact value of the logarithmic expression.log8 
A. -3
B. 3
C. -64
D. 64
Answer: A
Mathematics
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Find the unit tangent vector of the given curve.r(t) = (4 - 2t)i + (2t - 9)j + (10 + t)k
A. T(t) = 
i - 
j - 
k
B. T(t) = - 
i + 
j + 
k
C. T(t) = 
i - 
j - 
k
D. T(t) = - 
i + 
j + 
k
Mathematics
Perform the operation by applying the standard order of operations for a series of calculations.28 + 2 × 4
A. 36 B. 168 C. 120 D. 20
Mathematics
Solve the equation.log1/5x = -4
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If a projectile is launched upward from a height of 96 feet at an initial velocity of 80 feet per second, then its height h after t seconds is given by the function 
After how many seconds does the projectile land on the ground?
A. 5.0 seconds B. 3.0 seconds C. 6 seconds D. 11 seconds
Mathematics