If 2 alternate exterior angles of parallel lines are 4x+78 and 13x-49, what does x equal?

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?