. Sean throws a pebble from a bridge into the stream beneath him. The pebble’s height (in meters above the water), x seconds after Sean throws it can be modeled by: h(x)=-5x^2+10x+15

a. What was the height of the stone at the time that it was thrown?

b. When will the stone reach its maximum height?

c. What is the stone’s maximum height?

d. What is the stone’s height after 2 seconds?

e. When will the stone reach the stream?

f. What are the domain and range in the context of this problem?

Domain: Range:

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

Design an er diagram for keeping track of information about votes taken in the u.s. house of representatives during the current two-year congressional session. the database needs to keep track of each u.s. state's name (e.g., texas', new york', california') and include the region of the state (whose domain is {northeast', midwest', southeast', southwest', west'}). each congress person in the house of representatives is described by his or her name, plus the district represented, the start date when the congressperson was first elected, and the political party to which he or she belongs (whose domain is {republican', democrat', 'independent', other'}). the database keeps track of each bill (i.e., proposed law), including the bill name, the date of vote on the bill, whether the bill passed or failed (whose domain is {yes', no'}), and the sponsor (the congressperson(s) who sponsored - that is, proposed - the bill). the database also keeps track of how each congressperson voted on each bill (domain of vote attribute is {yes', no', abstain', absent'}). additional information:

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.