What is the solution to the following system? y = 3x
12x - 4y = 20

1. no solutions
2. (0, 20)
3. (0, 0)
4. infinite solutions

the first one, all those points on the line just make a strait line.

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