Acompany produces metal slabs for industrial use. the slabs come in three thicknesses: 5in, 10in., 15 in. the weights of each thickness for each metal are given below. metal 1: 150lbs, 300lbs, 600lbs metal 2: 130lbs, 260lbs, 390lbs metal 3: 310lbs, 620lbs,930lbs metal 4: 140lbs, 280lbs, 420lbs for which of the metals weight not proportional to the thickness? a.) metal 1 b.) metal 3 c.) metal 4 d.) metal 2

5, 10 ,15  

divide each by 5

1,2, 3

so the ratios should be 1,2,3

Metal 1 : divide by 150

1,2,4

Metal 2 divide by 130

1,2,3

Metal 3  divide by 310

1,2,3

Metal 4 divide by 140

1,2,3

Metal 1 is not proportional

Choice A

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.