Answer:
<em>4</em>
Step-by-step explanation:

Square root is the opposite operation of squaring. You are looking for a number that when you square it (multiply the number by itself) you get 16.
That number is 4 since 4 * 4 = 4^2 = 16

You could use a coordinate plane to solve this.
To reach B from point A, move 2 to the left and 9 down. Hope this helped, sorry I was in a rush-
The total means add so,
42 + 75 + 189 + 301 + 728 = 1,335
Answer is C.
Step-by-step explanation:
15/2=x/3
15×3/2=x
45/2=x
22.5=x
You’re right
6*7=42
5*7=35
9*7=63
7*7=49