Rep = Inputbox ("Confirmez la suppression de la

base de données", "Attention",VbExclamation)

Rep = Inputbox ("Confirmez la suppression de la

base de données", vbExclamation, "Attention")

Rep = MsgBox("Confirmez la suppression de la base

de données", vbExclamation, "Attention")

Rep = MsgBox("Confirmez la suppression de la base

de données", "Attention", VbExclamation)

Jenny pays her landlord separately for rent and for electricity.

Trevor goes to the movies with his partner, and receives a discount because he is a student.

Paula buys a pack of eight candles, because it is cheaper than buying each candle individually.

Brian pays his golf membership in monthly installments.

All of these are correct.

the firm is reliant on network externalities to remain profitable.

the firm is intending to charge a higher price to their 'locked in' customers at some time in the future.

the price is separated into two components, one of which is paid up-front and the other is paid later.

not affect the quantity of sunglasses that consumers choose to buy, as the price of sunglasses and the consumer's income have not changed.

decrease the consumer's marginal rate of substitution for sunglasses.

make the consumer's indifference curves steeper.

force the consumer to move to a lower indifference

curve.