Divide 64/80 = .08 To find a percentage from a decimal, simply multiply the decimal by 100. 80% is the correct answer
28(y-1/7)= 28y-4
this deals with reducing fractions to their lowest terms.
Given :
A function f(x) for different range of x.
To Find :
The value of f( -3 ) .
Solution :
We have to find the value of function at x = -3.
Now, in the given figure -3 lies in range x ≤ -2 and definition of function at that range is :

So, putting value of x = -3 in above equation, we get :

Hence, this is the required solution.
X^2+35=180?
Subtract 35 on each side
x^2=145
Take the square root
x= -sqrt(145)
+sqrt 145...
I hope this helps!!