Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300
B. $0.60
C. $1
D. $100
Answer: B
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Solve.The average cost per tape, in dollars, for a company to produce x sports videotapes is given by the functionA(x) = 
for x > 0
Graph the function on the interval (0, ?) and complete the following:A(x) ? 
as x ? ?.
A. 
A(x) ? 16 as x ? ?.
B. 
A(x) ? 0 as x ? ?.
C. 
A(x) ? 11 as x ? ?.
D. 
A(x) ? 1 as x ? ?.
Set up the general equation from the given statement.The safe load on a beam ? with a rectangular cross section that is supported at each end varies jointly as the product of the width W and the square of the depth D and inversely as the length L of the beam between the supports.
A. 
B. 
C. 
D. 
The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 8 + 5 cos tFind the body's acceleration at time t = ?/3 sec.
A. 
m/sec2
B. - 
m/sec2
C. - 
m/sec2
D. 
m/sec2
Identify the terms in the polynomial and their coefficients.4x + 5
A. 4x, 4; 5, 5 B. 4; 5 C. 4, x; 5, x D. x, 4; x, 5