MA240.2.2 College Algebra : Tests & Quizzes

Ashworth College : MA240.2.2 College Algebra : Tests & Quizzes Page 1 of 8



MA240.2.2 College Algebra ∠ Tests & Quizzes



Tests & Quizzes

Online Exam 8_07
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Part 1 of 1 - Lesson 8 Questions 85.0/ 100.0 Points


Question 1 of 20
Find the indicated term of the arithmetic sequence with first term, a1, and common 5.0/ 5.0 Points
difference, d.


Find a50 when a1 = 7, d = 5

• A. 192

• B. 252

• C. 272

• D. 287




Question 2 of 20
Use the formula for the sum of the first n terms of a geometric sequence to solve the 5.0/ 5.0 Points
following.


Find the sum of the first 11 terms of the geometric sequence: 3, -6, 12, -24 . . .

• A. 1045

• B. 2108

• C. 10478

• D. 2049




Question 3 of 20




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, Ashworth College : MA240.2.2 College Algebra : Tests & Quizzes Page 2 of 8



The following are defined using recursion formulas. Write the first four terms of each 5.0/ 5.0 Points
sequence.


a1 = 7 and an = an-1 + 5 for n ≥ 2

• A. 8, 13, 21, 22

• B. 7, 12, 17, 22

• C. 6, 14, 18, 21

• D. 4, 11, 17, 20




Question 4 of 20
Use the formula for the sum of the first n terms of a geometric sequence to solve the 0.0/ 5.0 Points
following.


Find the sum of the first 12 terms of the geometric sequence: 2, 6, 18, 54 . . .

• A. 531,440

• B. 535,450

• C. 535,445

• D. 431,440




Question 5 of 20
If three people are selected at random, find the probability that they all have different 5.0/ 5.0 Points
birthdays.

• A. 365/365 * 365/364 * 363/365 ≈ 0.98

• B. 365/364 * 364/365 * 363/364 ≈ 0.99

• C. 365/365 * 365/363 * 363/365 ≈ 0.99

• D. 365/365 * 364/365 * 363/365 ≈ 0.99




Question 6 of 20
5.0/ 5.0 Points




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