Perform the indicated operations.(7x - 3y)2
A. 7x2 + 9y2
B. 7x2 - 42xy + 9y2
C. 49x2 - 42xy + 9y2
D. 49x2 + 9y2
Answer: C
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Write the number in expanded form.507
A. 5(10)+ 0(100) + 7(1000) B. 5(100) + 0(10) + 7(1) C. 5(1000) + 0(100) + 7(10) D. 5(1) + 0(10) + 7(100)
Solve.What number added to 237 gives 608?
A. 845 B. -845 C. 371 D. -371
Solve the problem.A bookstore has an annual demand for 28,000 copies of a best-selling book. It costs $0.50 to store one copy for one year, and it costs $65 to place an order. Find the optimum number of copies per order.
A. 3816 copies B. 3257 copies C. 2428 copies D. 2698 copies
Solve the problem.The equation y = 0.003x + 0.10 can be used to determine the approximate profit, y in dollars, of producing x items. How many items must be produced so the profit will be at least $2008?
A. 0 < x ? 669,299 B. x ? 669,367 C. x ? 669,300 D. x ? 669,300