The time t, in seconds, taken by an object dropped from a height of s meters to reach the ground is given by the formula t = square root(s/5). determine the rate of change in time with respect to height when the object is 125m above the ground.

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 amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.