So we want to know when the cost of each is the same:
2.5m=7.5+m subtract m from both sides
1.5m=7.5 divide both sides by 1.5
m=5
So renting 5 movies costs the same from either store. ($12.50)
Answer:
Option a - f(x)=20x
Step-by-step explanation:
Given : For a certain function f = f(x), we know that f is proportional to x and that the constant of proportionality is 20.
To Find : A formula for f ?
Solution :
We have given that,
f is proportional to x i.e.
This implies
Where, k is the proportionality constant
The constant of proportionality is 20.
So,
On comparing with, f = f(x)
Therefore, The formula of f is
So, Option a is correct.
Answer:
The value of the expression Start Fraction 2 x squared Over x End Fraction plus x (100 minus 15 x) when x = 5 is 119.
Step-by-step explanation:
Answer:
7/10
Step-by-step explanation: