Answer:
answer is 10
Step-by-step explanation:
3+2=5
5×2=10
A) The constant of proportionality in this proportional relationship is 
B) The equation to represent this proportional relationship is y = 0.2x
<em><u>Solution:</u></em>
Given that,
The amount Naomi pays each month for international text messages is proportional to the number of international texts she sends that month
Therefore,
This is a direct variation proportion

Let "y" be the amount that Naomi pays each month
Let "x" be the number of international texts she sends that month
Therefore,

y = kx -------- eqn 1
Where, "k" is the constant of proportionality
Thus the constant of proportionality in this proportional relationship is:

Last month, she paid $3.20 for 16 international texts
Therefore,
y = 3.20
x = 16
Thus from eqn 1,

Substitute k = 0.2 in eqn 1
y = 0.2x
The equation would then be y = 0.2x
Answer:
The simple machines are the inclined plane, lever, wedge, wheel and axle, pulley, and screw.
Step-by-step explanation:
D. Multiply the 1/4 amount by 10, which is how much it took to get the 2ft to 20ft.
Answer:
If you want a fraction it would be -1/4 if you want a decimal it would be -0.25
Step-by-step explanation:
You have to take your X2- your X1 and you take your Y2- your Y1
Then you divide Y/X
So Your X2 would be 6 and X1 would be -6 and that would become a positive 12.
And your Y2 would be 2 and your Y1 would be 5 which would give you -3 when you subtract.
Then divide it 12/-3 which would give you -1/4 since you have to flip your fraction.
I hope this helps