How do you solve order of operations

1. are the triangles similar and if so why? what is the value of x? show your work.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0