Idon't understand how you find the value of expressions. ex..
5•[7+7÷(6+1)]+4•12

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

Is this a polynomial function? i need to know asap

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.