Question

4 mark for review the equation $x + y = 1,440$ represents the number of minutes of daylight (between sunrise and sunset), $x$, and the number of minutes of non - daylight, $y$, on a particular day in oak park, illinois. if this day has 670 minutes of daylight, how many minutes of non - daylight does it have? a 670 b 770 c 1,373 d 1,440

Explanation:

Step1: Substitute x=670 into equation

$670 + y = 1440$

Step2: Solve for y by subtracting 670

$y = 1440 - 670$

Answer:

B. 770