Add or subtract.(3x2 + 7x - 9) + (3x2 - 9x + 12)
A. 6x2 + 2x + 3
B. 6x2 - 2x + 3
C. 6x2 - 16x + 3
D. 6x2 - 2x + 21
Answer: B
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Use the linear approximation (1 + x)k ? 1 + kx, as specified.Estimate (1.0006)50.
A. 1.06 B. 1.012 C. 1.03 D. 1.006
Solve the problem.A basement is flooded with 230 cubic feet of water. Water can be pumped out of the basement at a rate of 47 cubic feet of water per hour. Let f(t) represent the number of cubic feet of water that remains in the basement after t hours of pumping out water.i) Find an equation for f.ii) Find t when f(t) = 0. What does your result mean in terms of the situation?iii) What is the domain and range of the model? Explain.
What will be an ideal response?
Write the equation of the axis of symmetry.f(x) = -2x2 + 16x - 37
A. x = 4 B. x = 5 C. x = -5 D. x = -4
The pair of triangles is congruent. List the corresponding angles and the corresponding sides. 
A. ?1 and ?5; ?2 and ?4; ?3 and ?6; 
and 
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and 
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and 
B. ?1 and ?4; ?2 and ?5; ?3 and ?6; 
and 
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and 
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and 
C. ?1 and ?2; ?2 and ?3; ?3 and ?4; 
and 
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and 
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and 
D. ?1 and ?4; ?2 and ?5; ?3 and ?6; 
and 
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and 
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and 