Find a so that the statement is true.
a = __________
Fill in the blank(s) with the appropriate word(s).
Answer: 2
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Evaluate the exponential function at the specified value of x.y = 3x , x = 3
A. 1
B. 27
C. 9
D. 
Use counting to determine the whole number that corresponds to the cardinality of the set.A = {x|x ? N and 4x + 2 = 4x}
A. Infinite B. n(A) = 2 C. n(A) = 0 D. n(A) = 1
Model the problem with a linear equation.The average value of a certain type of automobile was $14,700 in 2008 and depreciated to $7020 in 2012. Let y be the average value of the automobile in the year x, where x = 0 represents 2008. Write a linear equation that models the value of the automobile in terms of the year x.
A. y = -1920x - 660
B. y = -1920x + 14,700
C. y = -1920x + 7020
D. y = - 
x - 7020
Graph the function.y = - 
cos 
A. 
B. 
C. 
D. 