A person follows the recipe proportions and uses 14 cups of baking soda. Exactly how many quarts of white vinegar will the person use?

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?