The half-life of carbon-14 is approximately 5730 years. a) If we have 50 g carbon-14 today, how much is left in 50 years? (3 points)
b) If an artifact that originally contained 90 g of carbon-14 now contains 7 g of carbon-14,
how old is it?

He concluded that a heavier object dropped from the same height as a lighter object will land

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4