Use the discriminant to determine the number and type of the solutions to the quadratic equation. Do not solve the equation.5x2 + 4x - 7 = 0
A. two nonreal solutions
B. exactly one real solution
C. two real solutions
Answer: C
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Find the absolute maxima and minima of the function on the given domain.
on the square 
A. Absolute maximum: 49 at 
and 
absolute minimum: 0 at 
B. Absolute maximum: 147 at 
and 
absolute minimum: 0 at 
C. Absolute maximum: 147 at 
and 
absolute minimum: 49 at 
and 
D. Absolute maximum: 49 at 
and 
absolute minimum: 
at 
and 
Find the center and radius of the circle.(x + 5)2 + (y + 4)2 = 4
A. Center: (-4, -5), radius = 2 B. Center: (5, 4), radius = 4 C. Center: (4, 5), radius = 4 D. Center: (-5, -4), radius = 2
Solve the system.4x + 5y + z = -335x - 3y - z = -93x + y + 4z = -23
A. {(-4, -3, -2)} B. {(-4, -2, -3)} C. ? D. {(-2, -3, -4)}
Perform the indicated operations. Write answers using only positive exponents. Assume variables represent positive real numbers.(9z)1/5 ? (9z)-2/5
A. 
B. (81z)1/5
C. 
D. (9z)1/5