Question

Help please hurry......

Answer 1

All multiples of 15 between 0 and 300,inclusive

How?

$\\ \sf\longmapsto f(x)=15x$

$\\ \sf\longmapsto f(0)=15(0)=0$

$\\ \sf\longmapsto f(20)=15(20)=300$

Hence.

$\\ \sf\longmapsto 0\leqslant R_f\leqslant 300$

Answer 2

Answer:

All multiples of 15 between 0 and 300,inclusive

All multiples of 15 between 0 and 300,inclusiveHow?

⟼f(x)=15x

⟼f(0)=15(0)=0

⟼f(20)=15(20)=300

Hence,

⟼0⩽R f ⩽300.