I believe the answer to this question would be either a metaphor, idiom, or alliteration. But this would most likely be idiom because people can interpret different meanings of this phrase negative or positive and can take it personally or extensively.
Is - two billion dollars is a unit, one unit so it is singular and you use the singular verb
think - scientists is a plural, therefore, you must use the plural verb form of think
Replace r with 1.2....you'll get 6(1.2)+7....multiply the 6×1.2=7.2 then add 7
7.2+7=14.2
Answer: I think its B my SC is tavarus underscore 14
Explanation:
Buying things on easy instalments can keep you permanently in debt but if you have a regular salary or wages this may be the best way to spread out your debts. On the other hand, if you are a consultant or contractor and don't get regular income, it becomes necessary to pay some things with a lump sum as much as possible in the absence of regular income.