Bonjour,
[tex]Pn = 600 \div n + 5[/tex]
[tex]a. \: P _{1} = 600 \div 1 + 5 = 600 + 5 = 605[/tex]
[tex]b. \: P _{2} = 600 \div 2 + 5 = 300 + 5 = 305[/tex]
[tex]P _{3} = 600 \div 3 + 5 = 200 + 5 = 205[/tex]
[tex]c. \: P _{10} = 600 \div 10 + 5 = 60 + 5 = 65[/tex]