Determine whether the function is one-to-one.f(x) = -8 - x2
A. Yes
B. No
Answer: B
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Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.5x - 0.3y - 4.8z = -1.45.4x - 7.0y + 1.7z = -5.04.8x - 1.7y + 0.7z = 11.0
A. {(6.8, 7.2, 2.3)} B. {(13.6, 14.5, 4.5)} C. {(3.4, 3.6, 1.1)} D. {(27.3, 28.9, 9.0)}
Use the given sets to determine the solution set. U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}(A ? B') ? (B ? A')
A. {u, w, z} B. {q, s, u, w, y, z} C. {u, w, y, z} D. {q, s, y}
Solve and check.11m2 = 3m
A. - 
, 
B. - 
, 0
C. 0
D. 0, 
Solve the problem.The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 
has a resistance of 
What would the resistance be for a 
length, with diameter 
of the same kind of wire ?
A. 402 ohms B. 387.5 ohms C. 390 ohms D. 383 ohms