3 years ago

Mathematics with applications in the management, Natural, and Social Sciences Twelfth edition

Mathematics

1 answer:

Fiesta28 [93]3 years ago

8 0

Answer: 2014

Step-by-step explanation:

LED: -25x + 6y = 20

CFL: 15x + 2y = 322

we need to find which year it was the same to know where LED lighting surpassed CFL lighting

-25x + 6y = 20

15x + 2y = 322 (-3)

-25x + 6y = 20

-70x = -946

x = 13.51

The nearest year would be 14 which is 2014

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