Answer:
The fourth line will have 15 marbles
Step-by-step explanation:
The third line has 7 marbles. So, you double that and add one in order to find the number of marbles in the fourth line.
7*2=14
14+1=15
That would be $1.50 per Gallon
Answer:
Virtically
Step-by-step explanation:The lines below are vertically
Y=mx+b
M is the slope
B is the y intercept
In this case 4 is the slope and -9 is the y intercept