-4.2/12 = -42/120 = -7/20
-2/7 / -8/21 = 3/4
Answer: I believe it is the first one, “a number added five times”
Step-by-step explanation: a number added 5 times would mean that any random number could be multiplied by 5.
With the rest, it’s saying that C is being added on to.
Answer:
C: 12m
Step-by-step explanation:
We can solve this by using the Pythagorean Theorem 
For this triangle
a= x b= 5 c= 13
We now have the equation

If we simplify this we get

Next, we subtract 25 from both sides

Finally, if we take the square root of both sides of the equation, we find that
x= 12
Only graph 5 is a function because if you do the vertical line test, you draw a vertical line anywhere on the graph. If the parabola crossed the line twice it would not be a function.