Find the direction angles of the vector. Round to the nearest degree, if necessary.v = -6i - 2j - 3k
A. ? = 162°, ? = 108°, ? = 223°
B. ? = 97°, ? = 92°, ? = 94°
C. ? = 149°, ? = 107°, ? = 115°
D. ? = 139°, ? = 104°, ? = 112°
Answer: C
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Multiply the polynomials.(x + 1)(x - 1)(5x - 8)
A. 5x3 - 18x2 + 21x - 8 B. 5x3 - 8x2 - 5x + 8 C. 5x3 + 2x2 - 11x - 8 D. 5x3 - 8x2 + 5x - 8
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. No x-intercepts , y-intercept: (0, -1) ; 
B. No x-intercepts , y-intercept: (0, -1) ;
C. x-intercept: (-4, 0) , y-intercept: (0, -1) ;
D. x-intercept: (-4, 0) , y-intercept: (0, 1) ;
Solve.The population of a certain country is growing at a rate of 2.6% per year. How long will it take for this country's population to double? Use the formula 
which gives the time, t, for a population with growth rate k, to double. (Round to the nearest whole year.)
A. 28 years B. 29 years C. 26 years D. 27 years
Provide an appropriate response.In a raffle 1000 tickets are being sold at $1.00 each. The first prize is $100, and there are 3 second prizes fo $50 each. By how much does the price of a ticket exceed its expected value?
A. $1.00 B. $0.75 C. $1.75 D. $50