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Connecting to what MathMate said "hint: un repas" he was trying to tell you that the sentence is supposed to be "Quand tu dînes au restaurant, quel repas préfères-tu manger?". Because quel is masculin and quelle is feminin.
d = 15 m w = 5.3 kg g = 10 m/s² W = ? F = mg F = 5.3 kg x 10 m/s² F = 53 N W = F x d W = 53 N x 15 m W = 795 Joules