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What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

Adoughnut shop charges $0.50 for each doughnut and $1 for a carryout box. shirley has $10 to spend. which inequality can be used to find d, the number of doughnuts she could have bought if she also wants them in one carryout box?