The three lines represent the price, in dollars, of three different brands of chocolate bars. Which brand of chocolate bar is the most expensive?

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step-by-step explanation:

its 512 because parenthesis and to the 2nd power is 512 so it will be 512

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

correct answer was 0.5