Match the following. Glven
D={xl x is a whole number)
E={xl x is a perfect square < 100)
F=[xl x is an even number between 10 and 20)
1. D n (E u F)
{all whole numbers}
{1.4, 9, 16, 25, 36, 49, 64, 81, 12, 14, 18}
2. D n E
3. D u (E n F)
{16}
4. D n (E n F)
{1, 4, 9, 16, 25, 36, 49, 64, 81}
5. D n F
{12, 14, 16, 18}

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?