On the lines provided, write the plurals of these items, using apostrophes.

Example 1. U and A $\underline{\color{#c34632}{U’s ~and~ A’s}}$

P. S. ________________________________

In this task, find the sum of the convergent series by using a well-known function. Identify the function and explain how you obtained the sum.

$$\displaystyle\sum_{n=1}^{\infty}(-1)^{n+1} \frac{1}{5^n n}$$

A day spa charges a basic day rate that includes the use of a sauna, pool, and showers. For an extra charge, guests can choose from the following additional services: massage, body scrub, manicure, pedicure, facial, and straight-razor shave. How many ways are there to order additional services at the day spa?

Complete the sentence in a way that shows you understand the meaning of the italicized vocabulary word.

The wan color of her face indicated ...

Select the correct answer for the following questions: Color blindness is a characteristic in males.
a. $0 \%$
b. $0.4 \%$
c. $7 \%$
d. $10 \%$

What is the superposition principle? Why is it useful?

Determine the sums of the following geometric series when they are convergent.

$$1-\frac{1}{3^2}+\frac{1}{3^4}-\frac{1}{3^6}+\frac{1}{3^8}-\cdots$$

Describe the given set with a single equation or a pair of equations.
The plane perpendicular to the
(a) $x$-axis at $(3,0,0)$ (b) $y$-axis at $(0,-1,0)$ (c) $z$-axis at $(0,0,-2)$

In this exercise, find the sum of the convergent series by using a well-known function. Identify the function and explain how you obtained the sum.

$$\displaystyle\sum_{n=0}^{\infty}(-1)^n \frac{1}{2 n+1}$$

Find the volume of the solid generated by revolving the plane region bounded by the equations about the indicated line(s). $\frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}=1$ (a) the y-axis (oblate spheroid), (b) the x-axis (prolate spheroid).

Name the following acid salts: (a) $\mathrm{NaHCO}_3$, (b) $\mathrm{KH}_2 \mathrm{PO}_4$, (c) $\left(\mathrm{NH}_4\right)_2 \mathrm{HPO}_4$.

$$\textbf {\color{#19804f}{Describe}}\text { why eating vegetables is more efficient, in terms of energy, than eating meat.}$$

Fill in the numerator to rename each mixed numbers.

$$1\dfrac{1}{4}=\dfrac{\boxed{\color{white}x}}{4}$$

Consider the graph shown below. as we discussed earlier

On a copy of the graph, color the vertices using as few colors as possible.