First you subtract the 30 from 300 and than 270/45 and your answer will be A. 6
8 units to the left and 5 units up.
Just pick any point on the blue triangle and count how many you move to get to that same point on the red triangle.
1/6x = 2.....multiply both sides by the reciprocal 6/1
(6/1)(1/6)x = 2(6/1)
1x or just x = 12
The function can use all values of x which means x is in between -inf and +inf. The first option expresses this.