Pearson MyLab and Mastering x Assignments x Chapter 1: Arithmetic of Whol x + ⭑ 77#/ .1-1.4 v Whole Numbers D 不 Sierra wesson Question 20, 1.3.C-5 > HW Score: 75%, 15 of 20 points O Points: 0 of 1 Save Three different-sized boxes of envelopes contain 40, 100, and 600 envelopes, respectively. How many envelopes total are there in 16 boxes of the first size, 19 of the second size, and 12 of the third size? There are envelopes in total. M 回 0 0 US 21:00 心 x *