Dan needs to buy some pencils. Brand A has a pack of 12 pencils for $3.29. Brand B has a pack of 28 pencils for $8.99 . Find the unit price for each brand. Then state which brand is the better buy based on the unit price. Round your answers to the nearest cent.

First, you have to find the unit price for each brand by dividing the pack price by the number of pencils in each pack.

Brand A: $3.29/12= $0.27

Brand B: $8.99/28= $0.32

With this information, you can say that the brand that is the better buy based on the unit price is Brand A because it has a cheaper price per unit.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

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step-by-step explanation:

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