Suppose we need to add support to the CashRegister class from the preceding problem to enable the cashier to quickly undo the preceding purchase that may have been entered incorrectly. This will require the use of a third instance variable to keep track of the previous purchase. Complete the class with above specification.

she entered space in the space shuttle challenger in 1983.

answer; i believe the correct answer is layers;

assuming you are in the home page.

1) go to the upper right hand corner

2) click on your "profile picture"

3) go down to "edit profile"

4) it should be titled as "edit your profile", click on "profile picture"

5) choose a file

6) press "change"

you're profile picture is updated

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