The answer is b
If you go backwards on a number line, you are subtracting--which is the same as adding a negative.
First you go backwards 3 numbers, and then to get to -7, you went down (decreased) by 4 more, or subtracted 4 (added a negative 4)
Pretty sure all of them can be a linear function since they all graph out to be a line..
The definition of a linear function can be shown through this formula: y=ax+b
A 3-x because 3 equal f and g equal x for the second equation
Answer: (-3, -21)
I'm not sure if that's what you wanted, sorry.
If he bought the bike for $400 and lost 35% of his profit, you would divide 35 by 100. Next, you would multiply that number (0.35) by 400. When you do that, you get an answer of $140. In conclusion, if he bought the bike for $400 and sold it at a loss of 35%, he would lose $140 from that $400.
Additionally, if you wanted to know what exactly he sold it for, you would simply subtract 140 from 400. Which would be $260.
So, he bought the bike for $400, but when he resold it, he lost $140 of that pay. Basically, he resold the bike for $260.
I hope this helps! :) Let me know if you need help with anything else!