Question

How would you write a real-world problem that models the following equation: −x+40=x ?(1 point) Responses If Alex gained as much money as she lost, she would have 40 dollars. If Alex gained as much money as she lost, she would have 40 dollars. The number of days that the temperature has been below zero is 40 fewer than the number of days the temperature has been above zero. The number of days that the temperature has been below zero is 40 fewer than the number of days the temperature has been above zero. Marsha is below sea level. To get as far above sea level as she is below, she would have to move to a location 40 feet higher. Marsha is below sea level. To get as far above sea level as she is below, she would have to move to a location 40 feet higher. The amount of money a stock lost in the stock market was $40 more than it gained.

Answer 1

To model the equation \(-x + 40 = x\), we want to express a scenario where a certain amount related to "losses" and "gains" or comparable quantities leads to a total of 40 units in some context.

The best response from your options is:

If Alex gained as much money as she lost, she would have 40 dollars.

This response reflects the situation where Alex's net gain or loss, combined with her losses and set to equal the total would yield 40 dollars, which aligns with the equation structured as the difference between her losses and gains plus a fixed amount (40).