4 is the answer because you multiply
R=5.4
4.2r-12.68=10
+12.68 +12.68
4.2r=22.68
4.2/4.2 22.68/4.2
22.68/4.2= 5.4
Hope this helps! Have a great day :)
The answer is:
14.875
Hope this helps
According to the information provided the answer will be $76.49.
