Which sentence uses a prepositional phrase

I think it might be C but im not 100% certain

Explanation:

The sentence that uses a prepositional phrase is D. Some editorials exposing government corruption were leaked to the public.

Explanation:

A prepositional phrase is a group of words that contains a preposition, its object -noun or pronoun- and any other word that modifies the object. This group of words functions as a unified part of speech and usually modifies a verb or a noun.

In this case, the prepositional phrase to the public -that contains the preposition to and the object to the preposition the public- is modifying the verb (were) leaked.

x=4, y=4

step-by-step explanation:

y=2x-4;

x+2y=12

we can use substitution since the first equation is solved for y

where ever you see y in the second equation, replace it with 2x-4

x + 2(2x-4) = 12

distribute the 2

x+4x-8 = 12

combine like terms

5x-8=12

add 8 to each side

5x-8+8=12+8

5x=20

divide by 5

5x/5 = 20/5

x =4

we still need to solve for y

y = 2x-4

we know x =4

y = 2(4) -4

y = 8-4

y=4

it means that the hockey puck was traveling very fast.