If Y - 1 by Y is equal to 9 find y square minus 1 by y square​

(Y-1)Y=9

Y²-y=9

Y²=9+y

y = x + 95

y = 42 + 95

y=137 mm hg

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