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Question

Marta recorded the temperature at 8 p.m. as 56°F and the temperature at 8 a.m. the next morning as 36°F. Marta assumed the temperature changed at a constant rate. She wrote an equation to find the number of degrees the temperature dropped each hour, h, of the night. Which equation did Marta write?

A.8h−56=36

B.56−8h=36

C.12h−36=56

D.56−12h=36

Answer 1

it dropped 20 degrees in 12 hours. That's 20/12 per hour = 5/3 degree per hour

D is correct 56-12h =36

12h = 56-36 = 20

h= 20/12 = 5/3