Answer:
$504
Step-by-step explanation:
do the 10% 1st (4,200/10)
then do 4,200/100*2 (which is 480)
and add, so
420
84 +
--------
504
1. x = 7/2 + 5y/2
2. x = 3/4 - 5y/8
3. x = 1/8 = 5y/8
Thats all i can do. Its too confusing
C) 35.08 yards
60.50-25.42=35.08