Use laplace transform to solve: d^2y/dt^2- 2dy/dt + 2y = e^-t

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

The graph of y x3 is translated so that the point (1. 1) is moved to (1, 4). what is the equation of the new graph?

Twice the sum of a number and 2 is equal to three times the difference of the number and 8. find the number.