The temperature of a pot of water is 180.3℉. The temperature of the water changed -2.5℉ per minute. What was the water temperature after 20 minutes?
How many minutes did it take to cool the water to 100.3℉?

130.5, 40 minutes

Step-by-step explanation:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i