So, first let's change these numbers into decimal form: 3*0.1 + 4*0.01 + 8*0.001 ? 1.2 Multiply: 0.3 + 0.04 + 0.008 ? 1.2 0.348 < 1.2 One and two tenths is larger. Hopefully this is what you're asking, as this question is unclear
It says that the value of a box above two boxes is found by adding the expressions in the two boxes. I filled in the boxes. The top box is 13x + 30, or option B.