**Answer:**

21/4

**Step-by-step explanation:**

take 5 times 4 and add one

5x4=20+1=21

**Answer:**

m = 21

**Step-by-step explanation:**

13m = 273

m = 273/13

m = 21

**Hope this helps!**

**Answer:**

a F

**Step-by-step explanation:**

Normally when converting to scientific notation, I would count how many digits I have to move the decimal dot to get it in between the number, in this case, 36.

If you start shifting the decimal dot to the right and count one every time you shift one digit and go all the way to between 3 and 6, you would count to 5. Since you are shifting to the right, the power of the 10 should be negative. Thus, the answer should be 3.6 × 10 which is F.

**Answer:**

A. 25, 22

B. machine 1

How much faster? MACHINE 1 fills 3 more cartons per minute than MACHINE 2

**Step-by-step explanation:**

**Answer: 15 containers**

**Step-by-step explanation:**

Each container can hold 3 seashells but he has 47 seashells in his collection.

The number of containers that can take these shells is;

= 47 / 3

= 15.67

The number of containers that he can fill up completely is 15 containers.

After 15 containers, he will only be able to fill up 0.67 of the next container.