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
You might also like to view...
Use the data to make a histogram.In one 3-minute period, 17 cars passed a speed checkpoint. Listed below are their speeds in miles per hour.
19-2223-2627-3031-34 Speed (mph)
What will be an ideal response?
Find the x- and y-intercepts of f.f(x) = -x2(x + 3)(x2 + 1)
A. x-intercepts: -3, -1, 0; y-intercept: -3 B. x-intercepts: -3, -1, 0; y-intercept: 3 C. x-intercepts: -3, -1, 0, 1; y-intercept: 0 D. x-intercepts: -3, 0; y-intercept: 0
Solve the problem.A wire 20 feet long is to be cut into two pieces. One piece will be shaped as a square and the other piece will be shaped as an equilateral triangle. Express the total area A enclosed by the pieces of wire as a function of the length x of a side of the equilateral triangle. What is the domain of A?
What will be an ideal response?
Graph on the number line, and express in interval notation.The set of all real numbers less than 4.
A. [4, ?)
B. (-?, 4)
C. (4, ?)
D. (-?, 4]