Answer: 90 textbooks
Step-by-step explanation:
everytime you multiply the number of students you multiply the books by the same number. to find how many times 72 was multiplied you divide it by 12.
72 ÷ 12 = 6
then multiply the original number of books (15) by 6.
15 * 6 = 90
so for every 72 students the school orders 90 textbooks
Answer:

Step-by-step explanation:
Because the coordinates for x = 0 is (0,-2) so that's your y- intercept.
Then if you all you have to do is make sure that you have the correct slope.
So i just made a table on paper and started going up and seeing what slope i'd need to match the table on the screen.

Answer:
Pattern
: 
Pattern
: 
Step-by-step explanation:
Given:
Pattern x: start with 0 and add 6.
Pattern y: start with 1 and multiply 2.
To find: patterns
and 
Solution:
Pattern
: 
Pattern
: 
Answer:
B
Step-by-step explanation:
no explanation.......