When ringing up a customer, a cashier needs 9 seconds to process payment as well as
1 second to scan each item being purchased. If it takes 40 seconds to ring up a customer,
how many items are being purchased?

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

step-by-step explanation:

no solution.