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f(-1) = 2(-1) +3
= -2 +3
= 1
b. f(x) = 2x +3
f(1) = 2(1) +3
= 2 +3
= 5
Maaf klo slh.
f(x)=2x+3
f(-1)=2.(-1)+3
f(-1)=(-2)+3
f(-1)=1
b.
f(x)=2x+3
f(x)=2x+3=1
=2x=1-3
=2x=-2
=x =-2:2
=x =-1