2 pairs of lines that intersect
Here we will use exponential form, which is

Initial value, y0 = 500
Double of 500 = 1000



Required equation is

If you divide 67 by 50 you are left with 1.34 if you turn that decimal into a percent it turns into 134%
The greatest common factor of this can be solved by looking at the individual parts and splitting it up.
First, we have 28 and 7. Well, thats an easy one. 7 goes into 28 4 times so we are now left with 4 and 1.
We can also write the rest of this like this 4(x*x*y) - 1(x*y*y*y*y*y)
Now, what values are in both equations. We have one x and one y that can be taken out of both.
We end up with 7xy(4x-7y^4)
D. 1/2
We have 4 different suits and we want to know probability of getting a heart or diamond.
We have 2/4 or 1/2 or 50% chance to pick up a heart or diamond card.