Identify the lines about which the figure has reflective symmetry.
A. q, r, s, and t
B. r, s, and t
C. s only
D. q and s
Answer: C
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Find the vector projv u.v = 7i - 3j + k, u = -4j + 3k
A. 
i - 
j + 
k
B. - 
j + 
k
C. 
i - 
j + 
k
D. - 
j + 
k
Identify the curve represented by the equation.7x(x + 8) = -5y(y - 7)
A. Parabola B. Ellipse C. Hyperbola D. None of these
Solve the problem.A drug company establishes that the most effective dose of a new drug relates to body weight as shown below. Let body weight be the independent variable and drug dosage be the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the most effective dosage for a person weighing 110 lbs? 
A. 13.5 mg B. 13.07 mg C. 29 mg D. 13 mg
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = -2i + 3j, w = 3i + j
A. v1 = - 
(3i + j), v2 = - 
i + 
j
B. v1 = - 
(3i + j), v2 = 
i + 
j
C. v1 = - 
(3i + j), v2 = - 
i + 
j
D. v1 = - 
(3i + j), v2 = - 1i + 
j