a) u do it by substituting 4 in places where there r 'x'
since this one say f(4) it only can go to the function which says f(x) f(x)=4x-2 f(4)=4(4)-2, so according to BODMAS rule multiplication comes first rather than subtraction
so, f(4)=16-2=14 f(4)=14 do the others based on this, hope i explained well, if i did, please gimme brainliest :)
