Answer:

Step-by-step explanation:
Given

Required
Determine the equivalent expression

Simplify the first fraction

Apply law of indices on the first fraction;



Apply law of indices:

Evaluate the bracket

Collect Like Terms




Hence:

Answer:
m= 4.5 miles
Step-by-step explanation:
Let the number of miles Evelyn can run be m and can be modeled by the equation below
m= kx
Where x Is the Minutes
When m= 3
x= 40
3= k40
k= 3/40
If x= 60
m=3/40(60)
m = (60*3)/40
m= 180/40
m= 4.5 miles
X/8 + 12 = 15
x/8 = 3 . ( start by subtracting 12 on both sides to get x on one side)
x = 24 ( now multiply by 8 on both sides to get x by itself and there is your answer )
hope this helps , give brainliest ! thanks