Hannah works at an electronics store as a salesperson. Hannah earns a 7% commission on the total dollar amount of all phone sales she makes, and earns a 7% commission on all computer sales.

How much money would Hannah earn in
commission on a day that she sold $1000 worth of phones and $1700 worth of computers?

How much money would Hannah earn in commission on a day that she
sold $p worth of phones and $c worth of computers?