Which of the following numbers is irrational

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1