In 1980, in Great Falls, Montana, the temperature rose from -32°F to 15°F degrees in seven minutes. How much did the temperature increase?

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Answer 1 · 2016-11-11T17:47:32

#47^o" F"#

Think of about this in stages.

#color(blue)("Stage 1: ")#

it increase from -32 to 0.

To make -32 onto 0 you add 32

#color(red)("so the change is "+32)#
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#color(blue)("Stage 2: ")#

It increased from 0 to 15

To make 0 into 15 you add 15

#color(red)("so the change is "+15)#
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(blue)("Total change:")#

#color(red)("Total change is 32 + 15 = 47")#