A. 2x + 1 (2x is the "twice a number")
b. x - 6 (x is the number being decreased)
c. 2/3x
I'm not sure how the number line looks. Do you have a picture of it?
Answer:
6
Step-by-step explanation:
The ratio of 
is a constant
= 
= 
= 
That is y = x
When x = 21, then
y = × 21 = 6
As the question is written,
.. f(-1.8) = -2 +8 = 6
We suspect x is missing. Perhaps you intend
.. f(x) = -2x +8
.. f(-1.8) = -2(-1.8) +8 = 11.6
Answer:
15
Step-by-step explanation:
The first ratio is 1:3
12/36 = 3
So,
5 x 3 = 15
