Question

Can someone solve question one and two on piece of paper and show me step-by-step how to solve it

Answer 1

2)

$\bf \begin{array}{ccll} n&term&value\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 1&a_1&7\\ 2&a_2&2\cdot a_{2-1}+3\\ &&2\cdot a_1+3\\ &&2\cdot 7+3\\ &&17\\ 3&a_3&2\cdot a_{3-1}+3\\ &&2\cdot a_2+3\\ &&2\cdot 17+3\\ &&37\\ 4&a_4&2\cdot a_{4-1}+3\\ &&2\cdot a_3+3\\ &&74+3\\ &&77\\ 5&a_5&2\cdot a_{5-1}+3\\ &&2\cdot a_4+3\\ &&154+3\\ &&157\\ 6&a_6&2\cdot a_{6-1}+3\\ &&314+3\\ &&317 \end{array}$