Luke had $9. He had to spend 3/4 of it for a birthday gift. How much cash money did
he spend?

He spent $2.25.

Step-by-step explanation:

Multiply $9 by 3/4 and we get $6.75.

Now subtract $6.75 from $9.

We get $2.25

7

step-by-step explanation:

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