Please help me solve this questions , its urgent . pls plss

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

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

Which of the following is the sum of 3 1/6 + 6 3/8?