David T.

Can a figure have two lines of symmetry and no rotational symmetry?  

A cylindrical can is to have a volume of 1L.  a) Find the height and radius of the can that will minimize the surface area b) What is the ratio of the height to the diameter? Do pop cans have a... more

Find the derivative of f(x)= x^2/3(x^4/3-x^1/3+x^-5/3)

If someone is driving on a snow covered road with a drag factor of .2  and breaks suddenly, leaving a yaw mark with a 52 ft chord and a middle ordinate of 6 ft, what is  the minimum speed they... more

f(x) = 8x - 5, g(x) = 2x+6 Find (fg)(x).

f(x) = 5-x, g(x) = -9x+7 Find (f + g)(x).

f(-5) for f(x) = {7x     if x ≤ -1                       {x-9    if x > -1

Can someone review the process for this? Thank you!  

Please help me factor this.

At what value of x is f(x) a minimum?   I know f'(x) = e^((x^2-3x)^2) , but I don't know how to continue.   Thanks!

would you help me simplify   ___________        ______ √135b^2c^3d   x  √5b^2d       thanks

how do I solve √9y = 49       how do I solve (4-3√2)^2, please show steps

The region in the first quadrant between the x-axis and the graph of y=6x-x^2 is rotated around the y-axis. The volume of the resulting solid of revolution is given by   a) ∫ pi(6x-x^2)^2 dx from... more