If AB = 4x +20 and DC = 10x - 16 find x and AB

Allie answered 72% of the questions on her math test correctly. if she answered 18 questions correctly, how many questions were on the test?

We have enough material to build a fence around a station that has a perimeter of 180 feet the width of the rectangular space must be 3 1/4 feet what must the length be

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.