Determine whether quantities vary directly or inversely and find the constant of variation. a teacher grades 25 students essays in 4 hours. assuming he grades at the same speed, how long will it take him to grade 35 essays?

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