The number of frogs in a pond increases continuously at a rate proportional to the number present. There are 150 frogs present at a given time and 530 present 4 hours later. (a) How many frogs will there be 10 hours later the initial time? (b) How long will it take for the population to reach 10000 frogs?

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?