Consider a setA={λ|λ≤10,λ∈N∖{0}}. LetRbe a relation defined asλ1Rλ2, such that two lines20x+λ1y=0andλ2x−40y=0are perpendicular to each other. Given thatλ1,λ2∈A, how many such pairs(λ1,λ2)are permissible in the relationR?

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

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3