Answer:

Step-by-step explanation:

Rule of exponents
, 
=> 
=> 
Combining same bases
=> 
When bases are same , powers are to be added
=> 
=> 
=> 
=> 
=> 9
The last one is the only one that will work.
For the first one the y intercept is when x = 0. The point would be 0,4
The second one gives a point of (4,0)
The third one is nonsense. (4,4) is not on this line.
Answer:
42.8 + or - 12
Step-by-step explanation:
He's either gaining or losing $12 so you can write 42.8 plus or minus 12 as the equation
24x−6y=18 Step 1: Add 6y to both sides. 24x−6y+6y=18+6y24x=6y+18
Step 2: Divide both sides by 24.24x24=6y+1824x=14y+34
Answer: x=14y+34