I need help on question 9:))

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

Bring the fraction a/a-4 to a denominator of 16-a^2

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10