1) 45x< 405 what does x equal 2) 8x> 48 what does that x equal

Question 1) X < 9
Question 2) X > 6

1) x<9
you have to divide both sides by 45 (45/45) (405/45)to isolate the variable because you have to use inverse operations to undo an expression, and you must do the same thing to both sides of the symbol (=,>,<)
2) x>6
You have to divide both sides by 8 in this one.

2,4,5,8,10 are divisible by 40

Aquadratic function is one of the form f(x)=ax2 + bx + c l, where a,b, and c are numbers with are not equal to zero.