Mr. davis has 15 students in his class. he wants to send 3 of his students to pick up books for the class. how many different combinations of students can he choose?
a. 45
b. 2730
c. 455
d. 210

Which statement best describes the relation between correlation and causation? a. correlation results in causation. b. correlation does nog imply causation. c. correlation and causation are unrelated. d. correlation and causation are the same thing.

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Through non-collinear points there is exactly one plane.