Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation.
? 0
A. (-2, -1]
B. (-?, -2] or [-1, ?)
C. [-1, ?)
D. (-?, -2) or [-1, ?)
Answer: D
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Find the probability of the event.A coin and a six-sided die are tossed. What is the probability of getting tails and a number less than or equal to 5?
A. 
B. 
C. 
D. 
Solve.Find f-1(-3) and (f-1 ? f)(4) for the function f = {(6, -7), (4, -8), (5, -3)}.
A. {5, 4}
B. {5, -8}
C. {-3, -8}
D. 
Solve the problem.An economy consists of steel and coal. The steel industry consumes $ 0.25 of coal and $ 0.02 of steel to produce $1 of steel. The coal industry requires $0.04 of coal and $0.01 of steel to produce $1 of coal.(a) If the total production in millions of dollars of steel and coal is given by the matrix X = 
, find the amounts of steel and coal used in production.(b) Compute the amounts of steel and coal available which can be consumed or exported.
What will be an ideal response?
Simplify.-3(2x - 8) - 4x + 7
A. -10x - 17 B. 10x + 31 C. 2x + 31 D. -10x + 31