Lexis completed an 18 mile triathlon, She swam 1 mile in 1 hour, bicycled 12 miles in 1 hour then ran 5 miles in the 1 hour, the graph of lexie's distance versus the time is shown, write a piecewise function for the graph

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Which of the following is the result of expanding