The manager of a store that specializes in selling tea decides to experiment with a new blend. she will mix some earl grey tea that sells for $4 per pound with some orange pekoe tea that sells for $2 per pound to get 600 pounds of the new blend. the selling price of the new blend is to be $3.50 per pound, and there is to be no difference in revenue from selling the new blend versus the other types. how many pounds of the earl grey tea and orange pekoe tea are required?

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

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