Tyrone and Terri both bought sofas with installment loans. Tyrone bought a sofa with a sticker price of $1350 by paying $74 a month for 24 months, while Terri bought a sofa with a sticker price of $950 by paying $52 a month for 24 months. Both Tyrone and Terri hate paying interest, so they're trying to find out who paid the higher markup rate. Help them figure out the answer. What is the total amount of money that Tyrone paid?
How much money did Tyrone pay in interest?
What was the markup rate on Tyrone's sofa? Round your answer to two decimal places.
What is the total amount of money that Terri paid?
How much money did Terri pay in interest?
What was the markup rate on Terri's sofa? Round your answer to two decimal places.

IK THE ANSWE!

Step-by-step explanation:

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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:

just took the test and my answers down below!

step-by-step explanation:

check the pic :