Sarah Is going to pay for an item using gift cards. The clerk tells her that she will need 2 gift cards and an additional $3 to
2 answers:
Answer:
Step-by-step explanation:
Given : Sarah Is going to pay for an item using gift cards. The clerk tells her that she will need 2 gift cards and an additional $3 to pay for the item.
The number of gift cards is denoted by 'g'.
Then, the total algebraic expression to model the given situation bill is given by:-
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namely, let's rationalize the denominator in the fraction, for which case we'll be using the <u>conjugate</u> of that denominator, so we'll multiply top and bottom by its <u>conjugate</u>.
so the denominator is 5 + i, simply enough, its conjugate is just 5 - i, recall that same/same = 1, thus (5-i)/(5-i) = 1, and any expression multiplied by 1 is just itself, so we're not really changing the fraction per se.