James expected 70 people to show up to the concert but there were actually 80 people. Represent James’ error as a percentage. Quick!

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

[15 points, algebra 2]simplify the complex fraction and find the restrictions.