discrete marh problems

can you solve 22-27 please

22. A sequence {an} is defined as follows: a0=2,a1=1, and for n2,an=3an1nan2+1. What is a3 ? a. -2 b. -1 c. 1 d. 2 23. A population of mice increases by 10% every year. Define gn to be the number of mice after n years. Select the recurrence relation that describes the sequence {gn}. a. gn=(1.01)gn1 b. gn=(1.1)gn1 c. gn=(.01)gn1+gn2 d. gn=(1.1)gn1+gn2 24. Select the mathematical expression that is equivalent to the sum j=2N=2j1+7. a. j=2n3jj+7+(n4)n+3 b. j=2n5jj+7+(n4)n+3 c. j=2n3jj+7+jn+3 d. j=2n5jj+7+jn+3 25. Select the summation expression whose value is cquivalent to the sum 42+62+83++283. a. j=428(2)3 b. j+414(23 c. j=228(2))3 d. j=214(2f)3 26. Select the value of the sum k=23k2. a. 3 b. 9 c. 14 4. 19 27. Select the mathematical expression that is equivalent to the sum j=0n22j+1 when k is substituted for j+1. a. k=0n22k b. k=1n12k+1 o. k=1i12k d. k=1n22k+1