amtrak's annual passenger revenue for the years 1980-2000 is modeled approx. by the formula, R=40|x+11|+900 where R is the annual revenue in Millions of dollars and x is the number of years since January 1, 1980 what years was the passenger revenue $790 millions

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Write the expression as a single natural logarithm. 2 in a - 4 in y