Consider the triangle shown below where m∠C=51∘, b=10 cm, and a=21 cm. Use the Law of Cosines to determine the value of x (the length of AB in cm).
x=
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26

step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt