Ineed with my homework..

here are some examples to you- twice the sum of five and seven
(5+7)*2

three times the result of subtracting four from nine
3*(9-4)

two less than the result of dividing fifteen by three
15 divided by3-2

one more than five groups of two-fifths
5*2/5+1

Can someone me out here number 4 plz

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236