You put $4,000 in a savings account. The account earns 5.25% simple interest per year. What is the total balance after 5 years?

$5,050.00

Step-by-step explanation:

Principal: $4,000

rate: .0525

time: 5 Years

Interest:

I = Principal * rate * time

I = $4,000 × 0.0525 × 5 = $1,050.00

Total balance:

Principal + Interest

$4,000 + $1,050.00 = $5,050.00

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