Which of the following situations cannot be modeled with the equation 2x + y = 0?

A.

It takes 2 parts of chemical A to neutralize 1 part of chemical B.

B.

Tony must pull
twice as hard as Ralph just to sit still in a match of tug-o-war.

C.

If Sophie earns twice as many points as penalties, she will break even.

D.

Tom’s Saturday shift was twice as long as his 2 hour Sunday shift.
@darkblooyoshi

Question

Which of the following situations cannot be modeled with the equation 2x + y = 0?

A.

It takes 2 parts of chemical A to neutralize 1 part of chemical B.

B.

Tony must pull
 twice as hard as Ralph just to sit still in a match of tug-o-war.

C.

If Sophie earns twice as many points as penalties, she will break even.

D.

Tom’s Saturday shift was twice as long as his 2 hour Sunday shift. 
@darkblooyoshi

anonymous · Answer

The answer would be D. Notice the "=0" in each of the problems except D. For A it is "neutralize" for B it is "sit still" and for C it is "break even."