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The cost to run Machine 1 for an hour is \$2. During that hour, Machine 1 produced 240 bolts and 100 nuts. The cost to run Machine 2 for an hour is \$2.40. During that hour Machine 2 produces 160 bolts...

The pressure P of water on a diver's body is a linear function of a diver's depth, x. At the water's surface, the pressure is 1 atmosphere. At a depth of 100 ft, the pressure is about 3.92 atmospheres...

Theater tickets sold for \$7 on the main-floor and \$4.50 in the balcony. the total revenue was \$3,180 and there were 60 more main-floor tickets sold than balcony tickets. find the number of each type...

In 2006, in an effort to end the so called "steroid era," Major League Baseball introduced a strict drug testing policy in order to discourage players from using performance enhancing drugs...

1) The total amount spent on plasma flat panel TV's in the United States changed from \$5302 million in 2006 to \$1709 million in 2013. Find and interpret the average rate of change in sales, in millions...

1) An equation for a linear model, based on data from 1912-2012 (where x represents the year), is                          ...

When you reverse the digits in a certain two-digit number, you decrease its value by 54. The sum of its digits is 10. Write a system of equations that models this scenario.  Using the...