Here it goes:
1. If x = -3 and y = 2, what is the value of the expression 2X2 – 5xy?
2. If a = 4 and b = 7, calculate the value of 7a3 + 3ab – 3a2.
3. Given p = 4 and q = 9. Find the value of 4p2q3 – 6p3 + 10q2 -5
4. In Kids Birthday Cake Restaurant, 3 cheese cakes and 2 swiss rolls cost $22.40. But 4 cheese cakes and 3 swiss rolls cost $31.20. Calculate the price of a cheese cake and a swiss roll.
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Raymond Chua
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