Make f(x) = y
y = (15x + 50)/(x + 5)
Swap the x and y and make y the subject again
x = (15y + 50)/(y + 5)
x(y + 5) = 15y + 50
xy + 5x = 15y + 50
xy - 15y = 50 - 5x
y(x - 15) = 50 - 5x
y = (50 - 5x)/(x - 15)
So inverse function f^-1(x) = (50 - 5x)/(x - 15)
Answer:
5
Step-by-step explanation:
Answer:
-5/4
Step-by-step explanation:
Pick two points on the line
(-4,0) and (0,-5)
We can use the slope formula
m = (y2-y1)/(x2-x1)
= ( -5 -0)/(0 - -4)
= (-5-0)/(0+4)
= -5/4
Answer:
25
Step-by-step explanation:
He's already out of 50 bucks, because he didn't profit enough for his loan. So now we have -50, then in the next 2 months he records a profit of -75. We add that onto -50, to make -125. Then he makes 150 in profit so that's good good job Billy, -125+150=25. I hope this is right LOL
You have to convert the percent into a decimal before you convert it into a fraction then you simplify the fraction.
Hope this helps! :)
