Solve the problem.Three different high schools plan to order the same three text books. School A plans to order 90 of book 1, 20 of book 2, 80 of book 3. School B plans to order 60 of book 1, 20 of book 2, 20 of book 3. School C plans to order 80 of book 1, 100 of book 2, 70 of book 3. The cost of book 1 is $15 per copy, the cost of book 2 is $20 per copy, and the cost of book 3 is $25 per copy. What matrix product displays the cost to each school of buying the textbooks? Display the two matrices which must be multiplied and their product.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: A
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Find the missing parts of the triangle.C = 120.75°b = 4.70a = 12.20
A. c = 15.15, A = 43.78°, B = 15.47° B. No triangle satisfies the given conditions. C. c = 17.35, A = 41.62°, B = 17.62° D. c = 16.65, A = 45.62°, B = 13.62°
Find an equation of variation for the given situation.y varies directly as x and inversely as z, and y = 14 when x = 2 and z = 8.
A. y = 
B. y = 59xz
C. y = 
D. y = 
Find functions g and h such that f(x) = g(h(x)).f(x) = 
A. g(x) = 
, h(x) = 
B. g(x) = 
, h(x) = 5x + 2
C. g(x) = x-1/2, h(x) = 5x + 2
D. g(x) = 5x + 2, h(x) = 
Find the moment or center of mass of the wire, as indicated.Find the center of mass of a wire of constant density that lies along the first-quadrant portion of the circle 
A. 
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B. 
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D. 
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