$8.99
write a class called MotorSales. the class accepts an array of numbers representing the sale of each car. apart from the constructor, write two mutator methods;
one called sum, that calculates the total sales
the other called findLowest, that finds the lowest sale amount
also write an accessor method that returns the total amount in sales
you are responsible for declaring the appropriate variables in the class
do not write a test class none is necessary