Jika f(x) =4x-3, nilai f(5)-f(4) adalah.. Mohon bantuannya guys

f(x)=4x-3
f(5)-f(4)={4(5)-3}-{4(4)-3}
f(5)-f(4)=(20-3)-(16-3)
f(5)-f(4)=17-13
f(5)-f(4)=4

f(x) = 4x - 3

f(5) = 4(5) - 3
f(5) = 17

f(4) = 4(4) - 3
f(4) = 13

f(5) - f(4)
= 17 - 13
= 4


Semoga membantu :)