Answer:
A.
.
Step-by-step explanation:
We have been given an inequality
. We are asked to solve the given inequality for x.
Using distributive property, we will get:



Subtract 2 from both sides:


Divide both sides by 7:


Therefore, option A is the correct choice.
Answer:
its look like this
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given the expression

solving the expression

combine the fractions i.e 

add similar elements i.e 
Thus,
Answer: The required constant of proportionality is 10.
Step-by-step explanation: Given that y is directly proportional to x, and y = 150 when x = 15.
We are to find the constant of proportionality.
According to the given information, we can write
![y\propto x\\\\\Rightarrow y=kx~~~~~~~~~~~~~~~~[\textup{where k is the constsnt of propotionality}].](https://tex.z-dn.net/?f=y%5Cpropto%20x%5C%5C%5C%5C%5CRightarrow%20y%3Dkx~~~~~~~~~~~~~~~~%5B%5Ctextup%7Bwhere%20k%20is%20the%20constsnt%20of%20propotionality%7D%5D.)
When y = 150 and x = 15, we get from the above equation that

Thus, the required constant of proportionality is 10.