Sasha hikes into a canyon. She takes a break at the rest stations every 23 of a mile she descends. If she started at sea level and has hiked down to the fourth rest station, what is Sasha’s elevation now?
Select all that apply.

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?