3(x-4) = -3 what is the x?

Beth makes batches of bluberry muffins and banna muffins. each batchis 6 muffins. she makes 2.5 batches of bluberry muffins. how many batches of bananna muffins should beth make if she wants to have a total of 60 muffins?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?