Urgent answer quickly
giving lots of point.
sean plans to buy a new tablet for $315. the stores offers him an interest-free payment plan that allows him to pay in monthly installments of $25.
explain in words how the amount owed depends on the number of payments made. use n to stand for the number of payments and a for the amount still owed. then write an equation for calculating a for any value of n.

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

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!