The outer radius of a cyrindrical metal tube is R and t is the thickness of the metal. a. Show that the volume V, of metal in a length, l units, of the tube is given by V =πlt(2R-t). b. Hence calculate V when R =7.5, t=1 and l = 20.​

the final function for the graph becomes x-2=-1. before graphing you solve the equation, where x=1. then graph accordingly.   ( on the x-axis, 1 on the line will possess a vertical line.)

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

answer: i believe its b. if you sound out the sentences that sounds wrong.