5^4 power. We can identify this because 5 is multiplying itself 4 times.
Hope this helps!
Add all the numbers on the shape until you get your answer
Reducing the fractions, it is also true that:
Part A = 5/14 of the whole
Part B = 9/14 of the whole
The student should have phrased it to be "the difference between the product of 5 and y and 15", as the way the student writes it implies that 5y is being subtracted from 15 instead of the other way around.