Solve the problem.The perimeter of a triangle is 49 centimeters. Find the lengths of its sides, if the longest side is 9 centimeters longer than the shorter side, and the remaining side is 4 centimeters longer than the shorter side.
A. 12 cm, 9 cm, 25 cm
B. 3 cm, 8 cm, 12 cm
C. 12 cm, 9 cm, 21 cm
D. 9 cm, 20 cm, 25 cm
Answer: C
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Write a slope-intercept equation for a line with the given characteristics.m = - 
, passes through (-8, 3)
A. y = - 
x + 
B. y = - 
x - 
C. y = - 
x + 3
D. y = 
x + 
Graph the ellipse and locate the foci.
+ 
= 1 
A. foci at (0, 
) and (0, -
)
B. foci at (2
, 0) and (-2
, 0)
C. foci at (0, 2
) and (0, -2
)
D. foci at (
, 0) and (-
, 0)
Write an equation for the parabola with vertex at the origin.Through (-8, 8), opening to the left
A. x = 
y2
B. x2 = 8y
C. y2 = -8x
D. x = -8y2
The graphing calculator screen shows the graphs of the two given functions, and the display gives the coordinates of one of the solutions. Find the other solution.
y = -x2 + 4x + y = 4
A. (3, 1) B. (1, 3) C. (-1, 5) D. (7, -3)