statistics and Probability

An arithmetic sequence is given by the formulaLn=25+4n. Flnd the sum of the first 600 terms of thls sequence. What is the first term in this sum? What is the last term in this sum? What is the sum? A population grows according to an exponential growth model. The Initial population is H; = 7, and the growth rate Is r = 0.3. Then: a: Find an explicit formula for P\". Your formula should Involve 11. Use your formula to nd Pa PF: A population grows according to an exponential growth model. with H; = 50 and Pl = 75 Complete the recursive formula: 19,4: >