Graph the system of inequalities.y ? -x2 - 6x - 4y ? x2 + 6x + 4
A. 
B. 
C. 
D. 
Answer: D
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Simplify the radical.
A. - 
B. 
C. - 
D. 
Use the distributive property to write the sum as a product.20 ? 1 + 20 ? z
A. (20 + 20z) B. 21(z) C. (20z) D. 20(1 + z)
Use the fundamental counting principle to count the number of outcomes. A sports shop sold tennis rackets in 3 different weights, 3 types of string, and 4 grip sizes. How many different rackets could they sell?
A. 10 B. 24 C. 27 D. 36
Solve.A machine produces open boxes using square sheets of plastic. The machine cuts equal-sized squares measuring 3 inches on a side from each corner of the sheet, and then shapes the plastic into an open box by turning up the sides. If each box must have a volume of 675 cubic inches, find the length of one side of the open box.
A. 15 in. B. 21 in. C. 18 in. D. 14 in.