During the 1980s the U. S. public debt grew 300% while it only grew 150% from 1950 until 1980, which means:
a. the U. S. had a surplus budget
c. borrowing was consistent
b. the U. S borrowed twice as much during the 1980s in one-third of the period of time preceding it
d. the U. S borrowed half as much during the 1980s in one-third of the period of time preceding it

it is a because im a fod nigba

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.

35 is your answer because i looked it up

google it and it will pop up