Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(0, 14)}
B. {(5, -6)}
C. infinitely many solutions; {
4x + y = 14} or {
16x + 4y = 56}
D. no solution; ?
Answer: C
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Determine whether the players have equal probabilities of winning.Draw a card from a regular deck. If a club is drawn, player 1 wins; if a diamond is drawn, player 2 wins.
A. Yes B. No
Decide whether or not the network is traversable.
A. Traversable B. Not traversable
Given the polynomial function f(x), find the rational zeros, then the other zeros (that is, solve the equation 
), and factor f(x) into linear factors.f(x) = x3 - 7x2 + 9x + 5
A. -5, 1 + 
, 1 - 
; f(x) = (x + 5)(x - 1 - 
)(x - 1 + 
)
B. 5, -1 + 
, -1 - 
; f(x) = (x - 5)(x + 1 - 
)(x + 1 + 
)
C. 5, 1 + 
, 1 - 
; f(x) = (x - 5)(x + 1 - 
)(x + 1 + 
)
D. 5, 1 + 
, 1 - 
; f(x) = (x - 5)(x - 1 - 
)(x - 1 + 
)
Solve.How long will it take for the population of a certain country to double if its annual growth rate is 
? Round to the nearest year.
A. 1 yr B. 7 yr C. 16 yr D. 47 yr