Subtract:
?
?
A. 171
B. 227
C. 247
D. 1211
E. 237
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?
Solve.The charge q (in coulombs) delivered by a current i (in amperes) is given by 
where t is the time (in seconds). A damped-out periodic wave form has current given by 
Find a formula for the charge delivered over time t.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Use partial fractions to find the sum of the series.
A. 
B. 
C. 
D. 
Find the vertex, focus, and directrix of the parabola with the given equation.(y - 4)2 = -16(x - 1)
A. vertex: (4, 1) focus: (0, 1) directrix: x = 8 B. vertex: (-1, -4) focus: (-5, -4) directrix: x = 3 C. vertex: (1, 4) focus: (-3, 4) directrix: x = 5 D. vertex: (1, 4) focus: (5, 4) directrix: x = -3