Write the expression as a logarithm of a single expression. Assume that variables represent positive numbers.log27 - log211
A. log2-4
B. log2
C. log2
D. log4
Answer: C
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Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from the horizontal, and that the projectile is launched from the origin over a horizontal surfaceA baseball is hit when it is 3.4 ft above the ground. It leaves the bat with an initial velocity of 
at a launch angle of 25°. At the instant the ball is hit, an instantaneous gust of wind blows against the ball, adding a component of -10.9i (ft/sec) to the ball's initial velocity. Find a vector equation for the path of the baseball.
A. r = (132 cos 25° - 10.9)ti + (3.4 + (132 sin 25°)t + 16t2j B. r = (132 cos 25° - 10.9)ti + (3.4 + (132 sin 25°)t - 16t2)j C. r = ((132 cos 25°)t - 10.9)i + (3.4 + (132 sin 25°)t - 16t2)j D. r = (132 sin 25° - 10.9)ti + (3.4 + (132 cos 25°)t - 16t2)j
Find the values of a1, a2, a3, and a4.an = 
n
A. 1, 
, 
, 
B. 
, - 
, 
, - 
C. 
, 
, 
, 
D. 
, 
, 
, 
Find the perimeter of the polygon described. Write any improper fractions as mixed numbers.A regular pentagon; one side is 8 cm long.
A. P = 32 cm B. P = 320 cm C. P = 40 cm D. not enough information given
Match the equation to its graph.y = 4x + 6
A. 
B. 
C. 
D. 