Y=-5x+9
3x+2(-5x+9)=4
3x-10x+18=4
-7x=4-18
-7x=-14
x=2
5(2)+y=9
10+y=9
y=9-10
y=-1
The answer is (2,-1) :)
T = How tall they are.
Robin = 180
His brother = x cm shorter
T = 180 - x
Sorry i wish i knew the answer i’m actually learning that in class but i don’t quite understand it
So -390 -- 220 = -170
That was the change between the beginning and end of the turn.
(f/g)(x) = (x^2-25)/(x-5) = x+5. So domain will be R, all real numbers
