If p(x) =x ^2-1 and q(x) =5(x-1) ,which expression is equivalent to (p-q)(x)

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.