Decide whether or not the ordered pair is a solution to the equation.3x - 4y = 21; (3, 3)
A. Yes
B. No
Answer: B
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Solve the problem.How close does the curve y = 
come to the point 
? (Hint: If you minimize the square of the distance, you can avoid square roots.)
A. The distance is minimized when x = 0; the minimum distance is 
units.
B. The distance is minimized when x = - 
; the minimum distance is 
units.
C. The distance is minimized when x = 3; the minimum distance is 
units.
D. The distance is minimized when x = 0; the minimum distance is 
units.
Evaluate the series, if it converges.
A. 36 B. 81 C. - 36 D. Does not converge.
Solve the problem.The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a planet has a perihelion of 522.2 million miles and a mean distance of 525 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Find the value(s) of the variable for which the rational expression is undefined.
A. 49
B. 7
C. 7, -7
D. 