# Practice with rationals and multiplying

**Question description**

Find the domain of the rational function.

g(x) =

a. {x|x is a real number, x ≠ }

b. {x|x is a real number, x ≠ 2}

c. {x|x is a real number}

d. {x|x is a real number, x ≠ , x ≠ 2}

Find the domain of the rational function.

R(x) =

a. {x|x is a real number, x ≠ 0, x ≠ 1, x ≠ -2}

b. {x|x is a real number, x ≠ 0, x ≠ 1, x ≠ -2, x ≠ }

c. {x|x is a real number, x ≠ 1, x ≠ -2}

d. {x|x is a real number}

Simplify the expression.

a. 4(b - 2)

b. 4(b + 2)

c. 2(b - 8)

d.

Simplify the expression.

a.

b. p-5

c.

d.

Multiply the rational expressions and simplify.

a.

b.

c.

d. None of the above

Divide the rational expressions and simplify.

a. 1 / (x + 4)

b.

c.

d.

Multiply the rational expressions and simplify.

a.

b.

c.

d. -3

Divide the rational expression and simplify.

a.

b.

c.

d.

Find g(-2) for the function below.

g(x) =

a. 2/21

b. 2/7

c. 6/29

d. -6/29

The total revenue from the sale of a popular book is approximated by the rational function R(x) = , where x is the number of years since publication and R(x) is the total revenue in millions of dollars. Find the total revenue at the end of the second year. Round to the nearest million dollars, if necessary.

a. $250 million dollars

b. $200 million dollars

c. $692 million dollars

d. $500 million dollars

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