Question

If k(x) = 2x-3x then k(9) is. A.315 B.307 C.159 Or D.153 show work plzz thanks

Answer 1

k(x)= 2x-3x

k(9)= 2•9-3•9
k(9)= 18-27
k(9)= -9

answer: none of the above

Answer 2

none of the solutions

Explanation:

if k(x) = 2x-3x

We can substitute x=9 to find k(9)

k(9) = 2(9) -3(9)

= 18 -27

= -9