I hope this helps you
x'=2 y'=5
x"=0 y"= -4
slope. (2-0)=5-(-4)
slope. 2=5+4
slope =9/2
Let's say the original price was "x", thus "x" is the 100%, and we know that 15 is 80% of that, thus
Simplified the answer would b 35^8
(4/9)/x= 12
Multiply both sides by x
4/9=12x
Divide both sides by 12
(4/9)*(1/12)= 4/108
4/108= 1/27
Final answer: 1/27
here you gooo
you can just copy this
this is the exact squared root chart