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Concept changes in natural environment and climate of the world and global warming, trees that grow and are dry abstract upside down cityscape with sky background,and variable weather conditions
Calculator with the word ANNUITY on display on an office worplace
Fixed cost with no change in quantity of goods compare with variable cost with changes in production for business
Hand written scribble illustration - mathematical equations. Polynomials with variables (indeterminates).
Female artisan running small business analyzing bills and receipts while standing at table in ceramic art studio, doing pottery cost analysis, calculating fixed and variable costs of small business

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