Answer:
Step-by-step explanation:
The volume for a sphere is
. Our radius is 21 inches, so
and
. Multiplying straight across the top, using the fact that 3.14 is pi:
and divide to get that
V = 38772.72 in^3
Answer:
y=2x
Step-by-step explanation:
Answer: P(t)=25000(1.12)^t
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Factor the expression by grouping:

Answer:
76 % of babies will be born out of wedlock in the
year
Step-by-step explanation:
Given: In 1990, 28 % of babies in the United States were born to parents who were not married. This increased by approximately 0.6 % per year.
To find: year when 76 % of babies born out of wedlock
Solution:
A sequence is said to be in arithmetic progression if the difference between the terms is same.
For a sequence with first term as 'a' and common difference as 'd', the nth term is given by 
The given situation also forms an arithmetic progression with 
Also, put 
So,

So, 76 % of babies will be born out of wedlock in the
year