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.