I am in first year university so please keep the answers to that level, thanks

Question I (7poinrs) The total spent on Research and Development (R6213) by the federal government in the USA during 2002-2012 can be approximated by 3(r) = 3. 1 (1n t)+ 22 {Sbitiiong 2 S 1' 12 where I is the year since 2000. :1) Determine, to the nearest billion, the total spent in the year 2005 (I = 5 )(2 points) 5) Determine at what rate the total spent on R&D was varying then. (5 points) Question 2 (8 points) Chain Rule The following graph shows the approximate value of home prices and existing home sales as a percentage change from 2003, together with quadratic approximations, such that: Home prices and sales of existing homes 4-0 30 I Prices 20 10 U I\" 2(] 30 3006 IUIU Home prices: P(z)=r1101+41 03:34 Existing Home sales: 3(1) 2 l .511 1]r 0 S I S 4 where r is time in years since the start of 2006. :23 a Determine . 6 oinrs J 0,}, ,1; r p 1 b} Interpret contextually your ndings in question a) above. (2poinrs)