If x = 3 - 2 square root 2 then find the value of x^2-1/x^2

i believe the answer is d.

hope it you! : d

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

m∠a is 90°

m∠b is 40°