Here is the first program that increases the pay to 1.5 times the pay rate:

Here is the second program that provides an error message if the user enters a non-numeric string:

Here is the third program that generates grades based on scores entered or an error message if the user enters a number outside the range of 0 to 1.0 or enters a string:

Reflection: The first two programs went very smoothly based on my reading of the text. The last program seemed to work quickly, but then I realized that it did not meet all the conditions. I foolishly troubleshooted this for about an hour straight, googling the syntax for how to determine if an input is a string or a number. I tried nesting all conditional statements, but that didn’t work because input comes in as a string. so i knew that i needed a try – except to deal with string inputs and then tried nesting the if’s and elif’s under the try - but I think, ultimately, the errors were caused by misaligned indentations, though some of the errors said different problems, which I can’t remember now. I changed the error messages to be specific to the different errors (i.e., score must be under 1.0 and error, please enter a number) to help me trouble shoot the errors.