Sketch a contour plot. $f(x, y)=y e^{x}$

Solve for h : $S=2 \pi r^{2} h+\pi r^{2}$

Insects and birds both have wings. What kinds of evidence might show whether or not insects and birds are closely related? Explain.

Solve each inequality and graph the solution set. $\frac{x-3}{x+2} \geq 2$

Describe the majority criterion.

Organisms that contain genes from other organisms are called a. transgenic. b. mutagenic. c. donor organisms. d. cloned organisms.

Find each sum.

$$15+(-15)+200 =$$

Male birds of paradise are known for having bright markings that they flash while making complex movements when females are nearby. What is this behavior an example of and what is its purpose?

What are the three domains of life?

A number cube is rolled. The faces of the cube are numbered 1 through 6. What is the probability that the number rolled will be odd?

Describe each proposition as a negation, dis-junction , conjunction, or conditional, and determine whether the proposition is true or false. 51 is not prime.

A compact car has a mass of 1200 kg. When empty, the car bounces up and down on its springs 2.0 times per second. What is the car's oscillation frequency when its carrying four 70 kg passengers?

Use the method of Frobenius to find solution near $x=0$ of the differential equation

$$x^2y''+(x^3-x)y'-3y=0$$

Find the amount of interest earned by each deposit $3954 at 8% compounded annually for 10 years