Circle the conjunctions. In the blank write coord. if the conjunction is coordinating. Write corr. if the conjunction is correlative. Write sub. if the conjunction is subordinate.
_____The Jacksons lock their doors every night because thefts occur frequently in their town.

Which of the following periods is the earliest during which animals may have appeared? a. Ordovician period, b. Cambrian period, c. Ediacaran period, d. Cryogenian period.

During the period of time that a local university takes phone-in registrations, calls come in at the rate of one every two minutes.

b. What is the probability of three calls in five minutes?

Within any main energy level the correct sequence, when the sub-energy levels (subshells) are arranged in order of increasing energy, is:
A s p f d
B d s f p
C s p d f
D s d p f

During the period of time that a local university takes phone-in registrations, calls come in at the rate of one every two minutes.

a. What is the expected number of calls in one hour?

Be sure to show all calculations clearly and state your final answer in complete sentences.
Identical Planets? Imagine two planets orbiting a star with orbits edge-on to the Earth. The peak Doppler shift for each is 50 m/s, but one has a period of 3 days and the other has a period of 300 days. Calculate the two minimum masses and say which, if either, is larger. (Hint: See Mathematical Insight 13.2.)

Find first period interest , amount and second period interest, amount.

In exercise given below, let S be the generating function of the sequence {s sub n}. Find an equation satisfied by S as in Section mentiones, and solve for S.

$s_0=1$ and $s_n=s_{n-1}+2$ for $n \geq 1$

Sketch two periods of the graph for each of the following functions. Identify the stretching factor, period, and asymptotes.

$$f(x)=\frac{7}{5} \csc \left(x-\frac{\pi}{4}\right)$$

During the period of time that a local university takes phone-in registrations, calls come in at the rate of one every two minutes.

What is the expected number of calls in one hour?

A ball bounces elastically from the floor. It has x component of velocity +v just before it hits the floor. What is the magnitude of its change in momentum in the collision? What is the change in its kinetic energy? Are your two answers consistent with each other?

Circle the conjunctions. In the blank write coord. if the conjunction is coordinating. Write corr. if the conjunction is correlative. Write sub. if the conjunction is subordinate.
_____Wherever the divers went, they found a treasure.

Two students are finding the period of $y=\cos \left(\frac{2}{3} x\right)$ but get different results. Which student made the mistake?

Student A

$$\text { Period }=\frac{2 \pi}{b}=\frac{\frac{2 \pi}{2}}{3}=\frac{6 \pi}{2}=3 \pi$$

Student B

$$\text { Period }=\frac{2 \pi}{b}=\frac{\frac{2 \pi}{2}}{3}=\frac{4 \pi}{3}$$

A sociologist found that the number n of longdistance telephone calls between two cities during a given period varied (approximately) jointly as the populations $P_{1}$ and $P_{2}$ of the two cities and varied inversely as the distance d between the cities. An equation for a period of 1 week is $n\left(P_{1}, P_{2}, d\right)=0.001 \frac{P_{1} P_{2}}{d}$ Find n(100,000, 50,000, 100).