F(x)=2x-1
1) f(3)=2*3-1=5 f(-4)=2*(-4)-1=-9 f(0)=2*0-1=-1 f(-0.5)=2*(-0.5)-1=-2 f(3.2)=2*3.2-1=6.4-1=5.4
2) f(4)=2*4-1=7 f(-4)=2*(-4)-1=-9 f(0.5)=2*0.5-1=0
3) f(5)=9 верно т.к. f(5)=10-1=9 f(0.3)=0.4 не верно т.к. f(0.3)=0.6-1=-0.4 f(-3)=-7 верно т.к. f(-3)=-6-1=-7