Miss holman gave a 90 cent tip to a waitress for serving a meal costing $6.00. what is the percent of the bill was her tip?

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =