Find the derivative of the function at p 0 in the direction of a. f(x, y,z) = 3 e^x cos(yz), p0 (0, 0, 0), a = - i + 2 j + 3k

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25