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B. Write an equation or expression to represent each situation. 1. 7 years ago, mother was x years old. How old is the mother in terms of x years? 2. Carlo made a withdrawal of n pesos from his savings account. His previous balance was P24,750 and his new balance is P19,500. 3. Joanna is 3 times as old as her sister Jamie. If Jamie is b years old, write an expression in terms of b ages of the two girls. 4. In three years, the price of a new model of a smartphone will be 6 times more than its current price. If the projected price of the new smartphone is P40,000, what is the algebraic equation to express its current price? 5. Jake has 3 more sticker collection than Luis. How many stickers does he have if Luis has 4 less than a dozen?
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