I plugged this into photo math, but apparently I have to pay to find out how to get the answer. can you guys help me out?

Use circumcenter theorem to solve for the given values

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?

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.