Please help, I have no clue what to do for any of these

What is the value of x in the following equation? -3x-2=2x+8

The distributive property allows you to say that 3(x − 1) = 3x −

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?