Find the 7th term of the geometric sequence: . 3, 21, 147...
a. 
b. 
c. 
d. 
d.
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Solve using the elimination method. Use a graphing calculator to check your answer. x - 4y = -32-7x - 5y = -7
A. (4, 8) B. (-5, 8) C. (-4, 7) D. No solution
Solve the problem.Use the formula D = 10.0 log (S/S0), where the loudness of a sound in decibels is determined by S, the number of watt/m2 produced by the soundwave, and S0 = 1.00 × 10-12 watt/m2. A certain noise measures 75 decibels. If the intensity is multiplied by 1000, how many decibels will the new noise measure? (Round to an appropriate number of significant digits.)
A. 75,000 decibels B. 225 decibels C. 105 decibels D. 78 decibels
Using Ohm's law, find the current I in amps (A) in the electrical circuit.
I = __________ A
Fill in the blank(s) with the appropriate word(s).
Find any excluded values.
A. -1, 
B. - 
, 1, 
C. -1, 
, 
D. - 
, 1