Solve the problem.Find a polynomial for the sum of the areas of these rectangles.
A. 8x
B. x2 + 7x + 1
C. x2 + 7x
D. 8x2
Answer: C
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Use a calculator to help solve the equation. Round approximate answers to three places.(x + 1.25)2 = (x - 3.7)2
A. {2.475} B. {-1.225} C. ? D. {1.225}
Solve the problem.Bert is 16.5 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 3 kilometers per hour. They meet in 3 hours. How fast is Brenda walking?
A. 4.5 kilometers per hour B. 2.5 kilometers per hour C. 3 kilometers per hour D. 3.5 kilometers per hour
Solve the inequality.x3 ? 125
A. (-?, 5] B. [5, ?) C. (-?, -5] or [5, ?) D. [-5, 5]
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.17x2 - 12xy + 8y2 - 68x + 24y -12 = 0
A. ? = 63.4°
+ 
= 1
ellipse
center at (
, - 
)
major axis is x'-axis
vertices at (4 + 
, - 
) and (-4 + 
, - 
)
B. ? = 63.4°
x'2 = -16y'
parabola
vertex at (0, 0)
focus at (0, -4)
C. ? = 26.6°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±4)
D. ? = 63.4°
- 
= 1
hyperbola
center at (0, 0)
transverse axis is the x'-axis
vertices at (±4, 0)