Answer:
the coin is made of copper.
Step-by-step explanation:
.
Let x represent the distance Darren ran.
The distance Darren ran: d
The distance Darren ran plus 4 more miles: d + 4
Answer: d + 4
Total amount of money paid
=11 x 15
=$165
total amount of money sold
=25 x 15
=$375
difference
= 375 - 165
=$210
