What is the value of x in the following system of equations? y=−6x−16
y=x2−7
A.3
B.2
C.-1
D.-3

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle