Brainliest + 25 points! no kidding! and explain! the gym has 11 different types of machines in the weight room. geoff has time to use only 3 of them this afternoon. how many different combinations of machines can geoff choose from to use? show your work or explain how you got your answer.

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

How to do this , and can some one explain

The function models the number of accidents per 50 million miles driven as a function