Solve the problem.A rectangular garden is three times as long as it is wide. If the area of the garden is 1323 ft2, find the length and width of the garden.
A. length: 21 ft; width: 7 ft
B. length: 60 ft; width: 20 ft
C. length: 441 ft; width: 3 ft
D. length: 63 ft; width: 21 ft
Answer: D
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Solve the problem.Find the volume of a cylinder with radius 7 cm and height 5 cm. Use 3.14 for ?. Round your answer to the nearest tenth.
A. 417.6 cm3 B. 527.6 cm3 C. 769.3 cm3 D. 263.8 cm3
Solve the problem.A town has a population of 2000 people and is increasing by 9% every year. What will the population be at the end of 11 years?
A. 4735 people B. 5625 people C. 5161 people D. 3980 people
Solve the problem.Find k if x = 
is a solution of the equation kx2 + x + 8 = 0.
A. k = 
B. k = 
C. k = 
D. k = 
Use the regression feature of a graphing utility to find a linear model for the data. Let t represent the year, with t = 9 corresponding to 1999. Use the model to predict the average lengths of cellular phone calls for the year 2010. Round your answer to two decimal places.
The average lengths L of cellular phone calls in minutes from 1999 to 2004 are
shown in the table below.
A) 7.52 minutes
B) 2.76 minutes
C) 4.76 minutes
D) 1.88 minutes
E) 3.76 minutes