Find the unit vector having the same direction as v.v = 3i + 4j
A. u = - 
i - 
j
B. u = 15i + 20j
C. u = 
i + 
j
D. u = 
i + 
j
Answer: C
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Solve.The surface area of a cylinder with height, h, and base radius, r, is given by A = 2?rh + 2?r2. Using 3.14 for ?, find the surface area of a cylinder with a radius of 2 cm and a height of 20 cm.
A. 251.2 cm2 B. 263.76 cm2 C. 276.32 cm2 D. 753.6 cm2
Graph the system of linear inequalities and indicate the solution set.2x + 3y ? 6x - 3y ? 3 
A. 
B. 
C. 
D. 
Provide an appropriate response.Solve using a system of equations with two unknowns: Three T-shirts and two pairs of jeans cost $118. A T-shirt and three pairs of jeans cost $114. How much does a pair of jeans cost?
A. $18 B. $42 C. $58 D. $32
Find the amplitude or period as requested.Find the amplitude of y = 3 cos (4x - ?).
A. 3 B. 12 C. 4 D. ?