math
posted by umka .
you buy six bags of wild bird food to fill the feeders in your yard. oyster shell grit, a natural calcium source, sells for $4.00 a bag, and sunflower seeds sell for $4.45 a bag. if you spend $25.80, how many bags of each type of feed are you doing?
thanks.

solve
4.45x + 4(6x) = 25.80