4. At the local pet store, zebra fish cost $2.10 each and neon tetras cost $1.85 each. If Marsha bought
13 fish for a total cost of $25.80, not including tax, how many of each type of fish did she buy?
a) Write systems of equations to describe the situation,
B) solve the system
c) How many of each of fish did she buy
Please explain!!