Awnswer:
y=-19x+(the y intercept)
Step-by-step explanation:
y=mx+b
m(slope)=rise/run
(-11,-12) (-8,-21)
-21-12/-8-11
-33/-19
y=-19x+b
(You didn't add what the y intercept was, so you'll have to do that part when you awnswer.) :)
38.9 is the answer. because it is rounded to the nearest tenth.
Answer:
62.3538
Step-by-step explanation:
There is nothing to solve. If you need a decimal value, you can use a calculator or table of square roots.
I think the answer is None because half life of seven years means it's full life is 14 years and after 20 years there would not be any left