Answer:
$1.05
Equation 7*(.05*y) with y being years
Step-by-step explanation:
The start number is 7 and one equation is 7*(.05*y)
With Y being the variable for years
7*(.05*3)
7*.15
1.05 $1.05
The total amount of money Darnell will have is $8.05, and the interest is $1.05