The physical education teacher sets up 10 different exercise stations for the class to complete in how many different orders can the stations be done?
a 20
b 100
c 3,628,800
d 362,880

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?