Solve the problem. Use the theorem for error estimation for alternating series to perform the indicated error estimation.Given the demand equation 
for 0 ? x ? 48, approximate the average price (in dollars) over the demand interval 
to within ± 0.005.
A. $13.924
B. $13.926
C. $0.716
D. $9.284
Answer: B
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New telephone lines must be installed to connect 8 cities (A, B, C, D, E, F, G, and H). Due to government regulations, the only possible connections that are allowed are shown by the edges on the network below. The numbers on the edges indicate the cost (in millions of dollars) of each possible connection. The telephone company wishes to connect the cities in the cheapest possible way.
The number of bridges in the optimal solution to this problem is
A. 9. B. 8. C. 0. D. 7. E. none of these
Solve.x2/3 - 7x1/3 + 10 = 0
A. 8, 125 B. -125, -8 C. 2, 5 D. -5, -2
Identify the degree and leading coefficient of the polynomial.f(x) = -15x5 - 8x4 + 7x3 + 12
A. Degree: -15; leading coefficient: 7 B. Degree: 13; leading coefficient: -15 C. Degree: 5; leading coefficient: -15 D. Degree: 4; leading coefficient: -15
Solve the system by the substitution method.
A. {(8, 2), (-8, -2), (8, -2), (-8, 2)} B. {(8, 2), (-8, -2), (2, 8), (-2, -8)} C. {(-8, -2), (-2, -8), (-8, 2), (-2, 8)} D. {(8, 2), (2, 8), (8, -2), (2, -8)}