Identify the graph of the equation as a parabola, circle, ellipse, or hyperbola.y2 = 49 - x2
A. Ellipse
B. Circle
C. Parabola
D. Hyperbola
Answer: B
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Use factoring techniques to solve the equation.k2 + 3 = 19
A. {-4, 4} B. {4} C. {16} D. {-16, 16}
Solve. Remember to insert units when writing your answer.A 2.75-m sash cord has become frayed at both ends, so 1.3 cm is trimmed from each end. How long is the remaining cord?
A. 2.737 m B. 2.724 m C. 1.45 m D. 0.15 m
Find the equilibrium point of the demand and supply equations. (The equilibrium point is the price p and number of units x that satisfy both the demand and supply equations.)
a. ( 200, 85 )
b. ( 400, 71 )
c. ( 196, 82.2 )
d. ( 900, 36 )
e. inconsistent
Solve the problem. Give the answer to the nearest thousandth if necessary.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 26 yd long and touches the ground 20 yd from the pole. How tall is the pole? 
20 yd
A. 23 yd B. 16.613 yd C. 138 yd D. 8.307 yd