I need 5.7 to be tranformed from a decimal into a fraction

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

150.6

all i did was i multiplied 5.02 by 30

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

the answer is about 24 dollars