Question

Fungsi dirumuskan dengan f (x) 5x-5.jika f (b)=10,nilai c adalah...
bantu jawab plis udah 3 kali nanya belum ada yg jawab jg :(

Answer 1

F(x)=5x-5
f(1)=5(1)-5=0
f(2)=5(2)-5=5
f(3)=5(3)-5=10
polanya=(0,5,10,15,20,25,30,......)
f(b)=5b-5=10
=5b. =10+5
=5b. =15
=b. =15:5
=3
f(c)=5c-5=15
=5c. =15+5
=5c. =20
=c. =20:5=4