- Write the expression
as one simplified "
" term.
Answer:
.
- Determine the domain that makes the original expression
equivalent to the final expression.
Answer: The domain that makes both equations to be equivalent is x>6, or in interval notation,
.
Answer: 
.
- Solve the following equation for x:
Answer: x=7 - What is the common domain of the two functions?
Answer: The common domain of the two functions is 6<x<8, or in interval notation, (6,8).
Ra is 1,620 years. How long before the
sample reduces to 67% of the original amount?
Answer: It will take 936 years.
that contains
the points (3,26), (-2,21), and (1,6).
Answer: The parameters of the parabola are a=3,b=-2,c=5, so the equation for the
parabola is
- Find the inverse of the function
Answer:
.
- Give the domain and range for f(x) and
.
Answer: The domain of f(x) is x>2, or in interval notation,
.
The range of f(x) is all real numbers, or in interval notation,
.
The domain of is all real numbers, or in interval
notation, .
The range of is y>2, or in interval notation, .