Mr. fraser bought new shingles for his house for $3,500 using a credit card. his card has an interest rate of 17%. if he does not pay off his balance at the end of the month and he has no other charges, how much money will he owe on his credit card at the end of the first month?

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