Solve for the variable.
(x + 6) = 
(x + 8)
A. x = -12
B. x = -4
C. x = 3
D. x = 4
Answer: D
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Find the potential function f for the field F.F = -
i - 
j - 
k
A. f(x, y, z) = 
+ C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = - 
+ C
D. f(x, y, z) = 
+ C
Perform the indicated operation.The electric current i (in A) in a circuit with a battery of voltage E, resistance R , a current i, and an inductance L, is 
, where t is the time after the circuit is closed. Find i for R = 1.321 ?, E = 5.923 V, L = 3.289 H, and t = 0.00500 s to three significant digits.
A. 8.98 B. -0.00901 C. 8.96 D. 0.00900
Write in simplified form and list all restrictions on the domain.f(x) = 
A. f(x) = 
, x ? -2, 2
B. f(x) = 
, x ? -2
C. f(x) = 
, x ? 2
D. f(x) = 
, x ? -2
For the pair of functions, perform the indicated operation.f(x) = 
, g(x) = 
Find (f ? g)(x).
A. (2x + 5)(25x - 16)
B. (2x + 5)(5x - 4)
C. (
)(
)
D. (5x - 4)(
)