If triangle A(0,-1), B(0,3), C(3,-2) is rotated at 90 degrees CCW about the origin, what are the new coordinates

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|

Simplify the algebraic expression 8y-2(y+4)