Find the Cartesian product.A = {0}B = {19, 29, 39}Find B × A.
A. {0}
B. {(19, 0), (29, 0), (39, 0)}
C. {0, 0, 0}
D. {(0, 19), (0, 29), (0, 39)}
Answer: B
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Solve. The length of a rectangular frame is 5 cm more than the width. The area inside the frame is 84 square cm. Find the width of the frame.
A. 9 cm B. 7 cm C. 17 cm D. 12 cm
For the given functions f and g, find the requested composite function.f(x) = -2x + 5, g(x) = 5x + 3;
Find (g ? f)(x).
A. 10x + 28 B. -10x + 28 C. -10x - 22 D. -10x + 11
Find the unit vector in the direction of the given vector. Write your answer in the indicated form.Let u = 
. Find the unit vector in the direction of u, and write your answer as a linear combination of the standard unit vectors i and j.
A. 
i + 
j
B. i + j
C. 
i + 
j
D. 
i + 
j
Find the value(s) of the function, subject to the system of inequalities.Find the maximum and minimum ofz = 12x + 14y subject to x ? 0, y ? 0, 4x + 5y ? 30, 4x + 3y ? 20, x ? 5, y ? 8.
A. 60; 0 B. -84; 0 C. -55; -84 D. 60; -84