The equation you use would be 3x+10 = 3x-28
they aren’t linear pairs so it cannot equal 180
So here, we are starting with two numbers: the original price, and the price after the percent increase.
First, we need to find the differences between the prices to figure out how much of a difference the percent made. $181.09 - $102.30 = $78.79
$78.79 is how much money the original price was increased by. We can find the percent change using this, since this number is what percent of the original price went up.
So now: $78.78 / $102.30 = .77018
And now, we convert that to percent: 77%
The markup was 77%.
Answer:
Step-by-step explanation:
we have 4x-3y=12
-3y=-4x+12
-y=-4x+12/3
we have 12=3*4 so we remove 3 that is up and 3 that is down
-y=-4x+4
then we get y=+4x+4
Answer:
i think it’s b but don’t quote me on it
Step-by-step explanation:
We know that f(x) = 7x + 8. So, take the derivative of this function with respect to x.
This gives
f'(x) = 7
Now, you probably realized that the x value disappeared. This means that no matter what value of x you use, the derivative of this function is always going to be 7, even at x = 5. That is, the rate of change of this function is always going to be a rate of 7.
