Question

please help to solve the following problem on python 3.0 please

Translate the following problem descriptions into Python.

1. If score is greater than or equal to 90, then grade is set to ‘A’.

2. a) Assume the variables p, v, and r have been assigned some values we want to test. If the expression t / (p – v) is greater than 10, then r is set to 0.   If the result is not greater than 10, r is set to three times its initial value.

b) Are the parentheses in the expression required? Why or why not?

3. Assume a variable named number has been assigned some value we want to test. If the expression number % 3 results in an answer of 0, print a message saying that number is evenly divisible by 3. If number % 5 results in an answer of 0, print a message saying that number is evenly divisible by 5.

4. Assume the variable pH is assigned to some value for a chemical solution. Translate the information in the following

table into Python code:

pH value	Message to be printed
Less than 7.0, but not lower than the minimum of 0.0	“Acidic”
Exactly 7.0	“Neutral”
More than 7.0, but not higher than the maximum of 14.0	“Basic”
Below the minimum or above the maximum	“Invalid pH”

5. Fill in the following portion of a test plan, showing two of the values that could be used to test your code from #7 above. Select values based on two different reasons.

pH test value	Reason for testing that value	Expected result	Actual result when run
			Do not fill this in
			Do not fill this in

Answer 1

Please find the answers to each question below and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. If not, PLEASE let me know before you rate, I’ll help you fix whatever issues. Thanks


# If score is greater than or equal to 90, then grade is set to ‘A’.
if score >= 90:
    grade = 'A'


# If the expression t / (p – v) is greater than 10, then r is set to 0.
# If the result is not greater than 10, r is set to three times its initial value
if t / (p - v) > 10:
    r = 0
else:
    r = 3 * r


# b) Are the parentheses in the expression required?
# answer: Yes, otherwise expression becomes t / p-v and t/p is performed first and v is subtracted
# from the result, which is wrong.


# If the expression number % 3 results in an answer of 0, print a message saying that number is evenly divisible by 3.
# If number % 5 results in an answer of 0, print a message saying that number is evenly divisible by 5.
if number % 3 == 0:
    print(number, 'is evenly divisible by 3')
if number % 5 == 0:
    print(number, 'is evenly divisible by 5')
# note: you may change second if statement to elif if you want to execute the second if only if first is not satisfied



# if pH is below 0 or above 14, displaying Invalid pH
if pH < 0.0 or pH > 14.0:
    print("Invalid pH")
# otherwise (pH is valid), checking if it is below 7.0
elif pH < 7.0:
    print("Acidic")  # 0-6.99
# otherwise checking if pH is exactly 7
elif pH == 7.0:
    print("Neutral")
# otherwise (now only one case is remaining, pH will be definitely between 7.0 and 14.0)
else:
    print("Basic")

# few good test values for testing above pH classification would be -2, 3, 6.9, 7, 7.2, 12 and 15 because it
# covers all the cases. if you are limited to only two, use 7 and 10