Which of the following has the same value of 72% of 50? choose two answers

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?

Ireally don't understand this, i'm really an idiot but i want to know how to figure this out. !

According to the notation, which kind of dilation does this represent? reduction enlargement congruence this is not a dilation.