JPAK Company manufactures and sells mountain bikes. It normally operates eight hours a day, five days a week. Using this information, classify each of the following costs as fixed or variable with respect to the number of bikes made.

$$\begin{matrix} \text{\_\_\_\_\_\_\_\_ a. Bike frames} & \text{\_\_\_\_\_\_\_\_ d. Taxes on property} & \text{\_\_\_\_\_\_\_\_ g. Office supplies}\\ \text{\_\_\_\_\_\_\_\_ b. Screws for assembly} & \text{\_\_\_\_\_\_\_\_ e. Bike tires} & \text{\_\_\_\_\_\_\_\_ h. Depreciation on tools}\\ \text{\_\_\_\_\_\_\_\_ c. Direct labor} & \text{\_\_\_\_\_\_\_\_ f. Gas used for heating} & \text{\_\_\_\_\_\_\_\_ i. Management salaries}\\ \end{matrix}$$

Find the indicated value of the given function.

$W(3,10)$ for $W(R,h)=\frac{1}{3}\pi R^{2}h$

Is $F(x)=\ln(\ln{x})$ an antiderivative of $f(x)=\frac{1}{x\ln{x}}$? Explain.

If accounts receivable stays the same, and credit sales go up

a. the average collection period will go down and accounts receivable turnover will increase
b. the average collection period will go up.
c. accounts receivable turnover will decrease.
d. the average collection period will go down

Suppose a die is "loaded" so that the probability of getting each even number is $1 / 4$ and the probability of getting each odd number is $1 / 12$. If it is rolled $240$ times, how many times would we expect to get a $3$?

Suppose the rate of change of the percent $P$ of U.S. households with cable/satellite TV can be modeled by

$$\frac{d P}{d t}=\frac{46.3}{t+5}$$

where $t$ is the number of years past $1975$ . (a) Use integration and the data point for $2010$ to find the function $P(t)$ that models the percent of U.S. households with cable/satellite TV. (b) How well does the model from part (a) fit the data in the table? (c) If the model remains valid, use it to predict the percent of U.S. households with cable/satellite TV in 2018.

Find the indicated quantities for $y = f (x) = 3x^2$.

$\frac{f(x_1+\Delta x)-f(x_1)}{\Delta x};$ given $x_1=2$ and $\Delta x=1$

Pros and cons of qualitative and quantitative research.

Where does accumulated depreciation go on a balance sheet?

Which of the following sources of market inefficiency would be most easily exploited?

A. A stock price drops suddenly due to a large block sale by an institution.
B. A stock is overpriced because traders are restricted from short sales.
C. Stocks are overvalued because investors are exuberant over increased productivity in the economy.

Complete the problems. Check your answers in the back of the book. Estimate the sums by clustering, then compute the sums.

$$\begin{aligned} \$ 27.95\\ 31.42\\ 30.25\\ \underline{+\ 29.47} \end{aligned}$$

Carlo Mason works on $5 \%$ commission. If he sells $\$ 17,500$ in merchandise, find his gross earnings.

What sort of cultural or social forces impact how we think and behave?

Discretionary music purchases are a big business. Albums can be downloaded, streamed, played from a CD, played on vinyl, and more. What types of albums are being purchased in the United States? Music albums can be classified as current or catalog albums. The difference between the two is that a catalog album is at least 18 months old. Focus on data comparing album unit sales in the millions in both categories over a period of 7 years, as illustrated in this chart:

$$\begin{array}{c|c|c|c} \text { Year } & \text { Year Number } & \begin{array}{c} \text { Current Album } \\ \text { Sales in Millions } \end{array} & \begin{array}{c} \text { Catalog Album } \\ \text { Sales in Millions } \end{array} \\ \hline 2009 & 1 & 209.9 & 163.9 \\ 2010 & 2 & 187.3 & 138.9 \\ 2011 & 3 & 179.4 & 151.2 \\ 2012 & 4 & 161.0 & 155.0 \\ 2013 & 5 & 152.0 & 136.0 \\ 2014 & 6 & 130.5 & 126.5 \\ 2015 & 7 & 118.5 & 122.8 \\ \hline \end{array}$$

Construct a scatter plot using the year number as the x-coordinate and catalog album sales as the y-coordinate. Use $0 \leq x \leq 8$ as the x-axis interval and $100 \leq y \leq 220$ as the y-axis interval. What is the slope of the linear regression line?