Answer:
[tex]\boxed {\tt n=8}[/tex]
Step-by-step explanation:
We know that n is equal to r plus 5, or
[tex]n=r+5[/tex]
We want to find n when r is equal to 3. Therefore, we must substitute 3 in for r.
[tex]n=r+3 \ and \ r=3[/tex]
[tex]n=5+3[/tex]
Add 5 and 3.
[tex]n=8[/tex]
n is equal to 8 when r is equal to 3.
