Answer:

Step-by-step explanation:





Hey there :)




We need to change all fractions to have a common denominator
Lets see:
Multiples of 2: 2 , 4 , 6 , 8 , 10 , 12
Multiplies of 3: 3 , 6 , 9 , 12
Multiplies of 4: 4 , 8, 12
The common denominator is 12
2 x 6 = 12
3 x 4 = 12
4 x 3 = 12
=

=

We need to add the numerators while keeping the same denominator
=

=
Answer:
-x^2+3x-8
Step-by-step explanation:
I hope this helps:)
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A) because you would do 5,280 x 5 because he ran 5 miles and 1 mile is equivalent to 5,280