In each of the following sentences, underline the correct pronoun in parentheses.

Here is twenty dollars. Use (them, it) to get a taxi at the airport.

Fill in the blanks.

The fifth term of the sequence $\left\{\sum_{k=1}^n \frac{1}{k}\right\}$ is_________

Twenty-three thousand is how much less than one million? Use words to write the answer.

The common ratio in a geometric sequence is $\frac{3}{2}$, and the fifth term is 1 . Find the first three terms.

Find the sum of the first $14$ terms of a geometric series whose fifth term is $17.1366$ and whose common ratio is $1.3$.

Determine what element is designated by the following: fifth period, $n s^2(n-1) d^{10} n p^2$

Write an equation for the problem. Then solve the equation and check your solution. Twenty-one subtracted from a number is $-8$. Find the number.

A die is tossed 120 times. Find the probability of getting the following results. Exactly twenty 5's

Draw two lines under the verb in parentheses that agrees with the subject.

Believe it or not, these pants (was, were) quite fashionable twenty years ago.

Use the fifth partial sum of the exponential series to approximate each value. Round to three decimal places. $e^{\frac{1}{4}}$

Use the fifth partial sum of the exponential series to approximate each value to three decimal places. $e^{-0.75}$

Find the fifth term of each sequence. $a_{1}=2, a_{n}=3 a_{n-1}-2$

Write an equation to describe the relationship. Then solve the equation. Twenty less than 8 times a number is the same as 15 more than the number.

Why do you think the father comes up "twenty years away" in line $7$? (What word did you expect to find there?)