From her home, Giera traveled 5.8 miles north to the grocery
store, then 2.1 miles west to
the library. What is the distance
from her home to the library?

Step-by-step explanation:

The imaginary lines connecting the home, the grocery store and the library form a right triangle with the distance from the home to the library being a hypotenuse.

Use Pythagorean to find the distance:

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

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