In two months a puppy's weight increased from 5 lb 15 oz to 8 lb 5 oz. Find the amount of increase.

Prove that if n is an odd integer, then -n is also odd.

A rectangular window has dimensions of 9 feet by 12 feet. The homeowner wants to increase the window size by lengthening two sides by the same amount as shown. The area of the window is to remain less than 300 square feet. Solve the inequality.

A rectangular window has dimensions of 9 feet by 12 feet. The homeowner wants to increase the window size by lengthening two sides by the same amount as shown. The area of the window is to remain less than 300 square feet. Write an inequality to find the range of the amounts that can be added to the two sides.

In this exercise, you will need to choose the correct answer.

$\overline{A B}$ is 7.8 m long. If B lies between A and C and AB is three times the length of $\overline{B C}$, what is AC?

A 2.6 m

B 5.2 m

C 10.4 m

D 23.4 m

Review the vocabulary words listed. Match the words with the definitions below. Megaspore, micropyle, microspore, protonema, vegetative reproduction, anther, day-neutral plant, long-day plant, ovary, petals, photoperiodism, pistil, sepals, short-day plant, stamen, dormancy, double fertilization, endosperm, germination, hypocotyl, polar nuclei, radicle. Plants that produce flowers only after exposure to short nights

$\triangle A B C \sim \triangle D E F$. What is the length of $\overline{E F}$?

The length of the triangles edges are AC=11 cm, BC=12 cm, and DF=22 cm.

Find the following ratio $\triangle A B C$ where $m \angle C$ = $90^\circ$ AC = 6, BC= 7, AB= $\sqrt{85}$.

$$\tan B$$

Verify that each equation is an identity.

$$\cos \left( \frac { \pi } { 2 } + \theta \right) = - \sin \theta$$

Find the following ratio $\triangle A B C$ where $m \angle C$ = $90^\circ$ AC = 6, BC= 7, AB= $\sqrt{85}$.

$$\cos A$$

Find the following ratio $\triangle A B C$ where $m \angle C$ = $90^\circ$ AC = 6, BC= 7, AB= $\sqrt{85}$.

$$\cos B$$

Find the following ratio $\triangle A B C$ where $m \angle C$ = $90^\circ$ AC = 6, BC= 7, AB= $\sqrt{85}$.

$$\sin A$$

If $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ are $3 \times 4,2 \times 3,4 \times 2$ and $3 \times 3$ matrices, which one of the following matrix calculations is possible?

A. $(\mathrm{AC})^{-1}$

B. $\mathrm{DA}+\mathrm{BD}$

C. $\mathrm{D}^{-1} \mathrm{~B}$

D. $5 \mathrm{CB}-4 \mathrm{D}^{-1}$

E. $\mathrm{BD}+(\mathrm{AC})^{\mathrm{T}}$

An electric current is measured in amperes; a 1-A (ampere) current is a flow of 1 coulomb of charge per second. How many electrons per second pass through a wire carrying a 10-A current?