The graph shows the amount of money in Craig's savings account cover a period of 20 months. What is the average amount of increase per month in Craig's savings account between months 5 and 10

Answer:
D. $350
Step-by-step explanation:
On the 5th month, he has $500, on the 10th month, he has $850. Subtract $500 from $850 to get the average on $350
Answer:
should be about 350 I think I did this problem before sooo
Step-by-step explanation:
I'm not good at explaining