Im confused, I dont know how to do this expanded form

(4 times 100,000)+(4 times 10,000)+(9 times 1000)+(2 times 100)+(7 times 1)

Step-by-step explanation:

Well, in expanded notation you would multiply like for example 4 times 100,000 which is 4 hundred thousand or HT which is like it says in the number place chart it would be for every other number like that  I think that's what's it's called and it will be 400,000 and when you add all your expanded notations you would get 449,207 and also 0 doesn't count since it's 0 hope this help :D

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x