There is one restriction: The number whose square root is needed can not be negative
You find the average which is 1.5 + 2 divided by 2
or you can convert them to minutes
Answer: 2x-5y+x+y
3x-4y
Step-by-step explanation: combinded like terms
Answer:
Option A is correct.
The constant of variation is, 
Step-by-step explanation:
The Direct variation says that:
if a vary directly to b then, the equation is of the form: a = kb where k is the constant of variation.
Given: if y varies directly as x.
By definition of direct Variation:
y = kx where is the constant of variation.
It is also given that: y = -3 and x =2
Solve for k;
-3 = 2k
Divide both sides by 2 we have;

Therefore, the constant of variation is, 
Answer:
Make 7/5 and 1/8 have a common denominator, which is 40.
7/5 x 8/8 = 56/40(minutes driving to her home)
1/8 x 5/5 = 5/40 she spends