Asked by Bobby

If k(x) = 2x2 - 3, then k(9) is
A) 321
B) 162
C) 159
D) 153
Answered by Reiny
assuming you meant:
k(x) = 2x^2 - 3
in k(9) , notice that the x was replaced with 9
so replace the x with 9 on the right side of the equation
k(9) = 2(9)^2 - 3 = ....

make sure you follow the order of operation
Answered by Anonymous
153
Answered by dwbi
153
Answered by jkj
oui
Answered by jkj
153
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