Answer:

Step-by-step explanation:
Using PEMDAS rule
Parentheses, Exponents , Multiplication, Division, Addition, Subtraction
![\sf{4 [ 3 + 3(5 - 1) ]}](https://tex.z-dn.net/?f=%20%5Csf%7B4%20%5B%203%20%2B%203%285%20-%201%29%20%5D%7D)
Subtract 1 from 5
![\longrightarrow{ \sf{4 [3 + 3 \times 4 ]}}](https://tex.z-dn.net/?f=%20%5Clongrightarrow%7B%20%5Csf%7B4%20%5B3%20%2B%203%20%5Ctimes%204%20%20%5D%7D%7D)
Multiply the numbers : 3 and 4
![\longrightarrow{ \sf{4 [ 3 + 12 ]}}](https://tex.z-dn.net/?f=%20%5Clongrightarrow%7B%20%5Csf%7B4%20%5B%203%20%2B%2012%20%20%5D%7D%7D)
Add the numbers : 3 and 12

Multiply the numbers : 4 and 15

Hope I helped!
Best regards! :D
When using graphs to find proportional and nonproportional is easy. When it's proportional it goes right through the origin and it's nonproportional it doesn't go through the origin.
Answer:
1+1=2
Step-by-step explanation:
Thats easy
You cannot answer this question without a picture.
Answer:
Quantities that stay the same are shipping and handling
Quantities that change are the amount he pays for each book
I would say the shipping and handling fees are the dependent and the amount for the books is independent
Step-by-step explanation: