Seven cars and vans can be parked in a line in 39 916 800 ways. Find the number of ways in which five cars and x+ 2 vans can be parked in a line.

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.