Solve the problem.If the area of the region at step 4 in the construction of the Sierpinski gasket is 8, then the area of the region in step 5 of the construction of the Sierpinski gasket is
A. 6.
B. 8.
C. 10.
D. 0.
E. none of these
Answer: A
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Completely factor the polynomial or state that the polynomial is prime.x2 + 20x + 100
A. (x - 10)2 B. (x + 10)(x - 10) C. x2 + 20x + 100 D. (x + 10)2
Solve the problem.The quadratic function 
models the median, or average, age, y, at which U.S. men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1936, 47.9 years old B. 1952, 36 years old C. 1952, 47.9 years old D. 1952, 24.8 years old
Sketch the graph of the equation.y = 
A. 
B. 
C. 
D. 
Is the ordered triple a solution to the given system of equations?(-3, -1, 4) 2x - 2y - 3z = -16 4x - 3y + 3z = 3 x + y - 5z = -24.
A. Yes B. No