Answer:
She ordered 11 things
Step-by-step explanation:
you should have added the cost of each item then I could have given you the whole answer
Answer:
9
Step-by-step explanation:
To find the common difference, take the second term and subtract the first term
13-4 =9
Lets check:
Take the third term and subtract the second term
22-13 =9
The common difference is 9