if 10 g of radioactive substance are presented initially three years later only 5 g remain, how much of the substance will Be present after 7 years

What is the difference between the equations of a vertical and a horizontal line?

Solve the triangle. a = 21°, c = 105°, c = 5

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?