First we must convert the mixed numbers to the improper fractions:


Answer:
94.2 is my best guess
Step-by-step explanation:
Answer:
A. Cecelia method is exponential becuase the number of minutes increased by an equal number every week
Step-by-step explanation:
Celelias study method went from 20 to 30 to 40 to 50 on the other hand Christopher's method went from 5 to 10 to 20 to 40 my personal thought would be that Cecelias method increased by a equal amount
Correct me if I am wrong ...
Have a great day! :)