Molly is baking for the moms and muffins event at her school. she will bake 4 batches of banana muffins. she needs 1 3/4 cups of bananas for each batch of muffins.
part a
molly completed the multiplication below and said she needed 8 cups of bananas for 4 batches of muffins. what is molly's error?
4x1 3/4 =4x 8/4 =32/4=8
part b
what is the correct number of cups molly needs for 4 batches of muffins? explain how you found your answer

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Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?