Answer:
A
Step-by-step explanation:
so communitve property is a+b=b+a so 4+3=7 3+4=7
so it is a
the answer would be c . $553.88
Number of Books. Cost (dollars). 7 14. 8 16. 9 18. Find equivalent ratios when the number of books ordered is 1, 2, and 3. Write them as ordered pairs in the form...