Not a question rlly but i need to know what these math symbols are, i’m so lost. thanks.

When a formula is solved for a particular variable, several different equivalent forms may be possible. if we solved a=1/2bh for h, one possible correct answer is h=2a/b . which one of the following is not equivalent to this? a. h= 2(a/b) b. h= 2a(1/b) c. h= a/1/2b d. h= 1/2a/b

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)