How do I solve this problem??

For what value of x does 4x = (1/8) x + 5?

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?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)