Let f (t) be the number of people, in millions, who own cell phones t years after 1990. Explain the meaning of the following statement. f (10) = 110.3

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.