A and b are both accurate
For a:

which is true
For b:

which is also true
Your answer is $15.28.
I hope that this helps and have a nice day.
Answer:
$78
Step-by-step explanation:
To find a portion of anything, you just multiply your first item by the equivalent decimal of your percent. Let's put it into action in this problem:
If your original price of your bike is $130, and you are trying to find the sale price, which is 60% (aka 0.6) of your original price. Now, like I previously mentioned, to find the portion of your price, you just want to multiply your OG price (130) by the decimal equivalent of your sale, (0.6). So 130*0.6=78
Answer:
Addition
Step-by-step explanation:
What are you looking for. slope?