Factor the trinomial completely.3x2 - 21x + 30
A. 3(x - 1)(x - 30)
B. 3(x + 5)(x + 2)
C. (3x - 1)(x - 30)
D. 3(x - 5)(x - 2)
Answer: D
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Write the best-fit linear model for the data.The ages and lengths of several animals of the same species are recorded in the following table: 
Find the linear function to model this data.
A. y = 2.18x - 1.03 B. y = 0.93x + 2.18 C. y = 0.93x - 1.18 D. y = 1.03x - 2.18
Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 - 16x + 15 = 0
A. x2 + (y - 8)2 = 49 center (0, 8), r = 7 B. (x - 8)2 + y2 = 49 center (-8, 0), r = 7 C. (x + 8)2 + y2 = 49 center (-8, 0), r = 7 D. (x - 8)2 + y2 = 49 center (8, 0), r = 7
Graph the equation by plotting points.y = - 
x - 9
A. 
B. 
C. 
D. 
Translate the phrase into a subtraction problem. Then find the difference.26 subtracted from -9.
A. 35 B. -35 C. -17 D. 17