The slope of a tangent to a curve at any point is found by substituting the x- coordinate of the tangent point in the derivative of the curve is it false or true?

Tatiana wants to give friendship bracelets to her 32 classmates. she already has 5 bracelets, and she can buy more bracelets in packages of 4. write an inequality to determine the number of packages, p, tatiana could buy to have enough bracelets.