An amphitheater has 15 seats in the first row, 19 in the second, 23 in the third, and so on, for 29 rows. how many seats are in the amphitheater?

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?

Asquare has a perimeter of sixteen centimeters. what is the length of each of its sides? a. 8 cm c. 9 cm b. 4 cm d. 10 cm select the best answer from the choices

You wanted to draw an enlargement of design that printed on a card that is 4 in by 5