SMARTIES HELP ME PLEASE

If the public debt of a country in 2009 was $10432000000000 and the budget for 2010 was in deficit by $201645000000, what was the public debt in 2010? do not include commas in your answer.

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt

Savannah is 24 years older than ryan, while sebastian is 5 times as old as ryan. if savannah and sebastian are twins, which equation may be used to determine the age of all three people? a) 8x = 24 b) 24 + 2x = 5x c) 24 + 5x = x d) 24 + x = 5x