PLEASE HELP Natasha is going to take out an unsubsidized student loan of $13,500 at a 4.2% APR, compounded monthly, to pay for her last 2 semesters of college. She will begin paying off the loan in 9 months with monthly payments lasting for 12 years, and she's wondering what her monthly payment will be. She's also wondering what her monthly payment would have been if her student loan had been subsidized instead of unsubsidized. Help Natasha figure it out. Part I: What is the periodic interest rate of the student loan that Natasha is going to take out?
Part II: What is the total amount that Natasha will owe when she starts making payments?
Part III: How many monthly payments will Natasha have made once her loan is paid off?
Part IV: What will Natasha's monthly payment be?
Part V: What would Natasha's monthly payment have been if her student loan was subsidized instead of unsubsidized?​

when functions are first introduced, you will probably have some simplistic "functions" and relations to deal with, usually being just sets of points. these won't be terribly useful or interesting functions and relations, but your text wants you to get the idea of what the domain and range of a function are. small sets of points are generally the simplest sorts of relations, so your book starts with those.

step-by-step explanation:

state the domain and range of the following relation. is the relation a function?

{(2, –3), (4, 6), (3, –1), (6, 6), (2, 3)}

the above list of points, being a relationship between certain x's and certain y's, is a relation. the domain is all the x-values, and the range is all the y-values. to give the domain and the range, i just list the values without duplication:

domain: {2, 3, 4, 6}

range: {–3, –1, 3, 6}

(it is customary to list these values in numerical order, but it is not required. sets are called "unordered lists", so you can list the numbers in any order you feel like. just don't duplicate: technically, repetitions are okay in sets, but most instructors would count off for this.)

while the given set does indeed represent a relation (because x's and y's are being related to each other), the set they gave me contains two points with the same x-value: (2, –3) and (2, 3). since x = 2 gives me two possible destinations (that is, two possible y-values), then this relation is not a function.

note that all i had to do to check whether the relation was a function was to look for duplicate x-values. if you find any duplicate x-values, then the different y-values mean that you do not have a function. remember: for a relation to be a function, each x-value has to go to one, and only one, y-value.

state the domain and range of the following relation. is the relation a function?

{(–3, 5), (–2, 5), (–1, 5), (0, 5), (1, 5), (2, 5)}

i'll just list the x-values for the domain and the y-values for the range:

35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105