Give the domain and range of the relation.y = x2 + 1
A. domain: (-?,?); range: (-1, ?)
B. domain: (-1, ?); range: (-?, ?)
C. domain: (-?, ?); range: [1, ?)
D. domain: (1, ?); range: (-?, ?)
Answer: C
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Solve the problem.Find the equation of the plane parallel to the plane with equation -x + 3y + z = 0 and containing the point P = (-7, 5, 4).
A. -x + 3y + z + 26 = 0 B. -7x + 5y + 4z = 0 C. -x + 3y + z - 26 = 0 D. x - 3y - z = 0
Completely factor the polynomial or state that the polynomial is prime.81x2 - 25
A. (81x + 1)(x - 25) B. (9x + 5)2 C. (9x - 5)2 D. (9x + 5)(9x - 5)
For the functions f(x) and g(x), determine the domain of (f + g)(x) (the sum of f and g).f(x) = 
, g(x) = 
A. {x ? x is a real number and x ? 3 and x ? 6} B. {x ? x is a real number and x ? 3} C. {x ? x is a real number} D. {x ? x is a real number and x ? -3 and x ? -6}
According to automobile association of a country, on March 27, 2009, the national average price per gallon of regular unleaded (88-octane) gasoline was $2.08, and the price of premium unleaded (93-octane) gasoline was $2.27. Write an objective function that models the cost of the blend of mid-grade unleaded gasoline (89-octane). What is the optimal cost? ?
A. $2.23/gal B. $1.66/gal C. $2.12/gal D. $3.12/gal E. $3.23/gal