The population of a city is 2,500. If the number of males is 240 more than the number of females, how many males and females are there in the city?

Find the city and highway ranges for each car.

a) How did geography pose a challenge to the Incas as they built their empire?

b) How did they meet this challenge?

c) What does this suggest about the level of government and learning among the lncas?

Circle City, a typical metropolis, is densely populated near its center, and its population gradually thins out toward the city limits. In fact, its population density is $10,000(3 − r)$ people/square mile at distance $r$ miles from the center.

(a) Assuming that the population density at the city limits is zero, find the radius of the city.

We want to assess the level of particulate pollution in the city center. Describe the distribution of city pollution levels, and estimate the mean particulate level in the city center. (All estimates should include a statistically justified margin of error.)

The projected population (in millions) of another minority is modeled by the exponential function $h(t)=11.25(1.034)^t$ where t = 0 corresponds to 2000 and 0 ≤ t ≤ 50. Estimate in what year this minority's population will double the 2005 population of 13.30 million.

This minority's population will double the 2005 population in ___. (Round down to the nearest whole number.)

Find the percent change for each of the following cities: a. The population of City P increased to 125,000 from 100,000. b. City Q's population decreased to 100,000 from 125,000. c. City R's population grew to 87,450 from 72,625. d. City S's population went from 20,125 to 17,750.

A bus traveled 387 km in 5 h. One hour of the trip was in city traffic. The bus's city speed was just half of its speed on open highway. The rest of the trip was on open highway. Find the bus's city speed.

The London Eye observation wheel is $443 \mathrm{ft}$ tall. Use $s=16 t^2$ to approximate how long it would take an object to fall from the top.

A plane flies 483 km east from city A to city B in 48.0 min and then 966 km south from city B to city C in 1.50 h. For the total trip, what are the (a) magnitude and (b) direction of the plane's displacement, the (c) magnitude and (d) direction of its average velocity, and (e) its average speed?

The mayor of a city reprimands some city employees because they will not remove the obvious sags from the cables that support the city traffic lights. What explanation can the employees give? How do you think the case will be settled in mediation?

Repeat previous Exercise for the case in which the probabilities of city 1 and city 2 being successful are 0.4 and 0.25, respectively.

Find and correct errors in the use of parentheses and brackets. If a sentence is correct, write Correct.

This famous painter was known for delivering a biting bon mot ["clever turn of phrase"] in the London salons.

The average prices G (in dollars) of generic prescription drugs from 2005 through 2009 can be approximated by $G=2.649 t+15.00, \quad 5 \leq t \leq 9$ where t represents the year, with t=5 corresponding to 2005. Use the model to estimate the first year in which the average price exceeded $30.