Re read the problem then take it and put it in a linear format
15 x 10 is 150
600 - 150 is 450
Tommy still need 450 pencils
Hope this helps :)
Answer:
It is a quadratic function/graph
Greenland's lowest temperature is -87 degrees while Africa's lowest is 76 degrees higher than that. That means we need to add 76 to -87.
Let T be the lowest temperature in Africa.
So the lowest temperature recorded in Africa is -11 degrees.
It would be "twelve thousandths"