Mrs. ramiriz is making pies to sell at the local farmer’s market. it costs her $5 to make each pie, plus a one-time cost of $30 for baking supplies. she plans to sell the pies for $12 each. which equation can be used to find the number of pies she needs to sell to break even?

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this