Use the method suggested to compute mentally.Use front-end multiplying. 
A. 540
B. 539
C. 542
D. 541
Answer: B
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Solve the problem.In order for a chemical reaction to take place, the Fahrenheit temperature of the reagents must be at least 
. Find the Celsius temperatures at which the reaction may occur. 
A. C ? 364.39? B. C < 364.39? C. C ? 84.81? D. C ? 84.81?
Find the equation of the line of best fit from the data in the table. Round the slope and the y-intercept to the nearest hundredth.
A. y = 0.95x - 11.8 B. y = 0.95x + 11.8 C. y = 1.05x - 11.8 D. y = 1.05x + 11.8
Solve the system by the addition method.
A. {(2, 0), (-2, 0)} B. {(3, 0), (-3, 0)} C. {(0, 3), (0, -3)} D. {(0, 2), (0, -2)}
Find an equation for the parabola described.Vertex at (-3, 4); directrix x = 1
A. y = - 
(x + 3)2 + 4
B. x = - 
(y + 3)2 + 4
C. x = - 
(y - 4)2 - 3
D. y = - 
(x - 4)2 - 3