Mid-Chapter 11 Test

Find the tenth term of the arithmetic sequence in which a₁ = 5 and d = 4.

• 37

• 44

• 41

• 20

A water tank is emptied at a constant rate. At the end of the first hour, 36,000 gallons of water were in the tank. After six hours, 21,000 gallons of water remained. How many gallons of water were in the tank at the end of the fourth hour?

• 30,000

• 24,000

• 28,500

• 27,000

Find the sum of the arithmetic series in which a₁ = 37, n = 11, and d = -3.

• 45

• 235

• 242

• 572

Find the sixth term of the geometric sequence for which a₁ = 5 and r = 2.

• 320

• 160

• 15

• 6250

Find a₁ in a geometric series for which the sum of the first six terms is -728 and the common ratio is 3.

• -2

• 1456

• -4

• 4

• 252

• 285

• 342

• 435

Find the partial sum of the geometric series 512 + 256 + 128 + ... to 6 terms.

• 992

• 1000

• 896

• 1008

Find the sum of the arithmetic series 23 + 18 + 13 + 8 + ... + (-82)

• -590

• 590

• -649

• 649

Write an equation for the nth term of the arithmetic sequence 5, 3, 1, -1, ...

a_n= (a)  

Do NOT add any spaces in your answer. Do NOT include "a_n=" in your answer.

Find the four arithmetic means between 22 and 2.

22, __, __, __, __, 2

Type the four terms separated by commas. (example 2, 4, 6, 8)

(a)