Question

Need help picture below is ez like crazy i just need help on it AND 22 POINT FOR IT DO YOUR BEST

A. Explain the error and redo the problem showing the correct answer. *

B. Are both of the boys correct? If not who is correct and explain your answer. *

Answer 1

I know a is because he added 0.2 instead of still decreasing since its subtraction in negatives

and b : since -0.2 - -0.3 is -0.5 so neither are correct