The graph shows the marginal cost of producing soccer cleats for Sabrina’s Soccer. At which level of production does the company make the least profit?

A. the first pair of cleats
B. the second pair of cleats
C. the third pair of cleats
D. the fourth pair of cleats

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

Anyone know? will mark brainliest if you're correct!

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression