7. Given the following information: Job List: Memory Block List: Job Number Memory Requested Memory Block Memory Block Size Job A 57K Block 1 900K (low-order memory) Job B 920K Block 2 910K Job C 50K Block 3 200K Job D 701K Block 4 300K (high-order memory) a. Use the best-fit algorithm to indicate which memory blocks are allocated to each of the three arriving jobs. b. Use the first-fit algorithm to indicate which memory blocks are allocated to each of the three arriving jobs.

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;