Question

Rachel, David, and Kristen decide to pool their money to buy a video game system. David contributes 4 dollars more than twice what Kristen does, and Kristen contributes 3 dollars less than Rachel does. If Rachel contributes r dollars, then, in terms of r, how much does David contribute?


A. (r - 7)/2

B. (r - 2)/2

C. (2r + 7)/2

D. 2r − 2

E. 2r + 7

Answer 1

Answer:

answer = option D

Step-by-step explanation:

Here is my approach

Let's assume Rachel contributed = 10

Kristen = 10-3 = 7

David = 2(7) + 4 = 18

Now we need to find an answer choice that gives a result 18

D. 2r - 2 = 2(10) - 2 = 20 - 2 = 18

option D