A ball is dropped from the top of a building that is 1,000 feet high. Its height, in feet, as a function of the time, in seconds, after the ball was dropped, is given by the following equation, f() = 1,000 - 16x2. Which set of numbers is
appropriate as the domain for this function?

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

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