What is the answer? 8x = 36 + 18y9x = 28 + 4y

8x = 36 + 18y   ⇒   -2(8x = 36 + 18y)   ⇒   -16x = -72 - 36y

9x = 28 + 4y    ⇒    9(9x = 28 + 4y)    ⇒   81x = 252 + 36y

                                                                    65x = 180

                                                                    x =

9x = 28 + 4y  

9 = 28 + 4y

9(36) = 13(28 + 4y)

324 = 364 + 52y

-40 = 52y

 x = , y =

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