7. To raise money for charity, Jalaj walks 22 km, correct to the nearest kilometre, every day for 5 days. (a) Copy and complete the statement below for the distance, d km, he walks in one day .... < d km < .... (b) He raises $1.60 for every kilometre that he walks. Calculate the least amount of money that he raises at the end of the 5 days.
