The distance covered by an object is governed by the expression x^3+3x^2+2x. if the time taken to cover this distance is given by x + 1, what is the expression that governs the speed of the object?

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

Scott’s bank account showed a balance of $750 on sunday. during the next five days, he made one deposit of $140 and numerous withdrawals of $180 each. let x represent the number of withdrawals that scott made. write an inequality that can be used to find the maximum number of withdrawals that scott could have made and maintain a balance of at least $100. do not use a dollar sign ($) in your response.

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.