The bar graph below shows how companies have accommodated their employees with disabilities. The data were collected from personnel directors, human resources directors, and executives responsible for hiring at 501 companies.

Find the number of companies that made job reassignments to aid employees with disabilities.

How were New England towns settled?

Compare features of the flat worm, mollusc, and annelid body cavity, digestive tract, and circulatory system.

In this exercise, perform the operation and write the result in standard form.

$$\dfrac{5}{1-i}$$

According to a recent survey, about 1 in 3 new cars is leased rather than bought. What is the probability that 3 of 7 randomly-selected new cars are leased?

Classify the unit cell of molecular iodine.

The volume V of a cube is defined as the product of the length, L, the width, W, and the height, H. Assume that each of these dimensions is a random variable with mean 2 inches and standard deviation 0.1 inch. Assume independence and compute the mean and variance of V.

Describe the path that blood takes through a frog's body, starting with the ventricle. How is this method different from a fish's circulatory system?

You are a newspaper publisher. You are in the middle of a one-year rental contract for your factory that requires you to pay $\$ 500,000$ per month, and you have contractual labor obligations of $1 million per month that you can't get out of. You also have a marginal printing cost of$\$.25$ per paper as well as a marginal delivery cost of $\$ .10$ per paper. If sales fall by $20$ percent from $1$ million papers per month to $800,000$ papers per month, what happens to the AFC per paper, the MC per paper, and the minimum amount that you must charge to break even on these costs?

Some animals use diffusion instead of a circulatory system. Examples include: a. birds and jellyfish, b. flatworms and arthropods, c. mollusks and jellyfish, d. None of the above.

In the following exercise, determine whether the statement is true or false. If it is true, explain why it is true. If it is false, give an example to show why it is false.

Both the variance and the standard deviation of a random variable measure the spread of a probability distribution.

Flying with the wind, a plane traveled 450 miles in 3 hours. Flying against the wind, the plane traveled the same distance in 5 hours. Find the rate of the plane in calm air and the rate of the wind.

(a) Solve the heat equation (1) subject to

$$\begin{array}{ll}{u(0, t)=0, u(100, t)=0, t>0} \\ {u(x, 0)=\left\{\begin{array}{ll}{0.8 x,} & {0 \leq x \leq 50} \\ {0.8(100-x),} & {50<x \leq 100}\end{array}\right.}\end{array}$$

. (b) Use the 3D-plot application of your CAS to graph the partial sum $S_{5}(x, t)$ consisting of the first five nonzero terms of the solution in part (a) for $0 \leq x \leq 100$, $0 \leq t \leq 200$. Assume that $k=1.6352$. Experiment with various three-dimensional viewing perspectives of the surface (called the ViewPoint option in Mathematica).

The rate law for the general reaction

$$a \mathrm{~A}+b \mathrm{~B}+\cdots \longrightarrow c \mathrm{C}+d \mathrm{D}+\cdots$$

is rate $=k[\mathrm{~A}]^m[\mathrm{~B}]^n \cdots$.
(b) Explain the meanings of $m$ and $n$. Does $m=a$ and $n=b$ ? Explain.