Which strategies can be used to solve this problem? marcus bought books for his vacation. he bought a mystery book for $14, a fantasy novel for $25, and 3 biographies that cost $6 each. how much money did marcus spend on the books altogether? choose all answers that are correct. a. translate into an equation. 14 + 25 + 6 = n b. work backward. start with $6 and add this amount to $25 and $14. multiply the sum by 3 to get the amount marcus spent. c. use logical reasoning. think that marcus bought a total of 5 books. multiply $6 by 3 to get the cost of the biographies. add this amount to the cost of the two other books ($14 and $25) to get the total amount marcus spent. d. draw a diagram. draw 5 rectangles to represent the 5 books marcus bought. put $14 in one rectangle and $25 in another rectangle. write $6 in each of the remaining 3 rectangles. add the 5 amounts together to get the total amount marcus spent.