Could anybody help me with this i will cashapp u $5 if its right

Answer:
a. Correct
b. Incorrect
c. Correct
d. Incorrect
e. Incorrect
Step-by-step explanation:
b. Incorrect because negative hours do not make sense
d. 80 is achieved only with more than 3.89 hours of study, so 3.5 is not enough
e. No, the score is the dependent, it comes out of the formula.