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Math·Algebra·Linear equations in two variables

easy

A teacher is creating an assignment worth $42$ points. The assignment will consist of questions worth $1$ point and questions worth $2$ points. Which equation represents this situation, where $x$ represents the number of $1$-point questions and $y$ represents the number of $2$-point questions?

A

$3xy=42$

B

$3(x+y)=42$

C

$2x+y=42$

D

$x+2y=42$