If s= the number of student in a PE class which algebraic expression represents the phrase below? The number of students in each of 4 equal groups

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Why is causation so much more difficult to prove than correlation?