Match the equation with the surface it defines.x2 + y2 = 81 
A. Figure 4
B. Figure 1
C. Figure 2
D. Figure 3
Answer: C
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Use the Factor Theorem to determine whether x - c is a factor of the given function for the given value of c. If x - c is a factor, then write f in factored form. That is, write f(x) = (x - c)(quotient).f(x) = x6 - 7x4 - 21x2 + 27; c = 3
A. Yes; f(x) = (x - 3)(x5 + 3x4 - 2x3 + 9x2 - 3x - 9) B. Yes; f(x) = (x - 3)(x5 - 4x4 + 3x3 + 6x2 - 3x - 9) C. Yes; f(x) = (x - 3)(x5 + 3x4 + 2x3 + 6x2 - 3x - 9) D. No
Decide whether the slope is positive, negative, zero, or undefined.
A. Undefined B. Positive C. Negative D. Zero
Solve the system by the substitution method.
A. {(x, y) 
B. {(1, 0)}
C. ?
D. {(0, 1)}
Use the substitution method to solve the system of linear equations. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this.x - 2y = -195x - 3y = -53
A. (-8, 7) B. (7, 7) C. (-7, 6) D. No solution