Question

1). The temperature was (-15) degrees Fahrenheit at 6:00 am. The temperature rose 4 degrees Fahrenheit every hour until 12:00 pm. At what time did the temperature reach 1 degree Fahrenheit? (3 marks)

Answer 1

Answer:

Step-by-step explanation:

Original temperature at 6:00 am= -15

Increase in temperature per hour= 4degree

So, let us suppose that after x hours, the temperature rises to 1 degree.

ATQ, -15+ 4x =1

or, 4x = 16

or, x = 16/4 = 4

Hence, after 4hours i.e. at 10:00 am, the temperature will rise to 1 degree Fahrenheit.

Hope it helps you...