Write the exponent in descanting order
8²,3⁴,12¹,24°

First let's convert the exponents into numbers :-

☆

☆

☆

☆

Now, ordering in descanting or descending order :-

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