The answer is 45.
15% = 0.15, since you move the decimal 2 places
0.15 x 300 = 45.
Set up the following equations:


x represents car A's speed, and y represents car B's speed.
We'll use elimination to solve this system of equations. Multiply the first equation by 7:


Combine both equations:

Divide both sides by 28 to get x by itself:

The speed of car A is
80 mph.Since we now know the value of one of the variables, we can plug it into the first equation:


Subtract 160 from both sides.

Divide both sides by 2 to get y by itself:

The speed of car B is
60 mph.
slope=1
y-intercept= -1
y=x-1
<h3>Your Answer is y=x-1</h3>
I think it's the one u picked