Please help me find the area and perimeter

Write the pair of fractions as a pair of fractions with a common denominator

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

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?