Plz help me will mark brianliest

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test

Which expression gives the exact value of x?

Ahighway between points a and b has been closed for repairs. an alternative route between there two locations is to travel between a and c and then from c to b what is the value of y and what is the total distance from a to c to b?