Solve the system using elimination. y = 2x - 7
-y = 4x + 1
A. (-3. -13) )
B. (-3, 13)
C. (-5, 1)
D. (1,5)

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b