Homework help, please

1- identificar select the category that corresponds to each term. january 23 11: 59 pm unlimited attempts remaining grade settings 276-279 vocabulary list modelo fiesta quinceañera casada adolescencia viudo juventud navidad niñez vejez aniversario de bodas divorciado madurez cumpleaños soltera

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

The suare root of 9x plus 7 plus the square rot of 2x equall to 7