Answer:
24
Step-by-step explanation:
$14.64
Multiply 8 by .67 which is 5.36
Subtract 5.36 from 20.00 and that's 14.64
eq.1 is x + y = 24
eq.2 is x - y =2
part c is
13 + 11= 24
and
13 - 11 =2