Principal: $4,000 Rate: 7.25%
Time: 8 years
How much money will need to be paid back to the bank for this loan?

the money required to pay back to the bank for the loan is $7,002

Step-by-step explanation:

The computation of the money required to pay back to the bank for the loan is given below:

= Principal × (1 + rate of interest)^number of years

= $4,000 × (1 + 0.0725)^8

= $4,000 × 1.0725^8

= $7,002

Hence, the money required to pay back to the bank for the loan is $7,002

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