1) Use the functions r(t), q(t), and s(t) given to answer the questions below.
r(t)=sqrt(6t+64) q(t)=8t-1 s(t)=3-19t
What is the y-intercept of y=(r-s)(t)?
2) Use f(x)=sqrt(16-x^2) and g(x)=5x^2+8x-4 to answer the following question
Which of the following is in the domain of (f o g)(x)? Select all that apply.
3)If (f o g)(x)=7sqrt(x^2+1)represents the composition of two function f(x) and g(x), which of the following could represent f(x) and g(x)? Select all that apply.
a) f(x)=7sqrt(x); g(x)=x^2+1
b) f(x)=sqrt(x+1); g(x)=7sqrt(x)
c) f(x)=7sqrt(7x+1); g(x)=sqrt(x)
d) f(x)=7sqrt(x+1); g(x)=x^2
e) f(x)=x^2; g(x)=7sqrt(x+1)
f) None of these
4) The half-life of a radioactive element is 6.6 hours. How much of a 360 mg sample is left after 26.4 hours?
5) Which of the following functions could be used to represent a population which grows 2% each year from an initial population of 900?
The Correct Answers are provided.