B and D are the correct choices
The equation for the first option is Y=10x + 200
The equation for the second option is Y=30x + 100
X = one month
To find when they would be the same about you have to set the equations equal to each other
10x + 200 = 30x + 100
-10x -100 -10x -100
100= 20x
5 = x
After five months she would save the same amount. To find how much is saved you have to plug in 5 for x in one of the equations. You can always double-check 5 by plugging it in both equations and making sure you get the same answer
Y= 10(5) + 200 = 250
Y= 30(5) + 100 = 250
She would have saved $250 after five months by using either method
The answer is C .12/15 since you can divide A,B,D and get 2/3 but you cannot with C
The domain the given graph is :
- -12 <u><</u> x <u><</u> 13
700 because the 9 in the tenth place is larger than 5
