Robert wants to fence his rectangular lot. If the length of the lot is 3 meters longer than its width. What is the perimeter of the of the rectangular lot if its width is y meters?
4y + 6 meters
Rose had ten roses (r) in her garden. During weekends she buys additional roses. Express her total roses in algebraic expression.
10 + r
In Grade 7A1, there are 7 girls and b boys. Write an expression that represents the total number of students in the class.
7 + b
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