(i) 37,680$ / year
(ii) 14,400$
(iii) 51,680$
Step-by-step explanation:
(i) Since he gets paid $3,140 / month, then for the year he makes as a fixed salary: $3,140 * 12 = $37,680
(ii) Since he has an annual commission of 2% and in 2009 he sold cars valued at $720,000, then the amount received in commission for the year: $720,000 * 2/100 = $14,400
(iii) Since his annual fixed salary is $37,680 and made a commission that year of $14,400, then his total income for that year is $37,680 + $14,400 = $51,680