AnswersTX-Pre-CalculusUnit Test

Unit Test — Unit test Answers

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Becky is offered the two deals below.Deal 1: She will get a quarter on the first day of the week. Each day thereafter for one week, she will receive double what she received on the previous day.Deal 2: She will get $4 each day for 1 week.Which statement is true in every aspect regarding these two deals?

A
She should go with deal 1 because is greater than by $3.75.
Option A
B
She should go with deal 1 because is greater than by $35.50.
Option B
C
She should go with deal 2 because is greater than by $27.33.
Option C
D
She should go with deal 2 because is greater than by $48.50.
Option D
2
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Cable TV service costs $1,020 per year. Joaquin estimates that the rates go up by $60 each year. The expression below represents the total amount of money spent on cable TV for the next 10 years. Which of the following is another way to write the expression?

Question illustration
A
mc017-2.jpg
Option A
B
mc017-3.jpg
Option B
C
mc017-4.jpg
Option C
D
mc017-5.jpg
Option D
3

Which summation formula is equivalent to the one below?

Question illustration
A
mc013-2.jpg
Option A
B
mc013-3.jpg
Option B
C
mc013-4.jpg
Option C
D
mc013-5.jpg
Option D
4

Which of the following is another way of expressing ?

Question illustration
A
mc022-2.jpg
Option A
B
mc022-3.jpg
Option B
C
mc022-4.jpg
Option C
D
mc022-5.jpg
Option D
5

What is the missing value in the following arithmetic sequence?n12345an23.85.6 9.2

A
7.1
B
7.2
C
7.4
D
7.5
6

Carissa is budgeting for her next semester at college. She spent $50 on gas this month. Economists are predicting gas prices to rise 8% per month for the next 6 months. How much should she budget for gas if classes start next month and are 4 months long?

A
$204.00
B
$210.80
C
$240.00
D
$243.33
7

What is the value of ?

Question illustration
A
–38
B
–14
C
6
D
38
8

Ms. Clark earned $29,600 in her third year as a banker and $32,600 in her seventh year. How much did she make in her tenth year? Assume that her yearly salaries form an arithmetic sequence.

A
$28,100
B
$34,850
C
$55,550
D
$58,100
9

How can be rewritten?

Question illustration
A
mc005-2.jpg
Option A
B
mc005-3.jpg
Option B
C
mc005-4.jpg
Option C
D
mc005-5.jpg
Option D
10

Jonathan and Kevin each rewrote and evaluated the expression . They arrived at different answers. JonathanStep1:Step 2:Step 3:Solution:KevinStep 1:Step 2:Step 3:Step 4:Solution:Which of the following is true?

Question illustration
A
Jonathan is correct. Kevin made an error at step 1.
B
Jonathan is correct. Kevin made an error at step 3.
C
Kevin is correct. Jonathan made an error at step 2.
D
Kevin is correct. Jonathan made an error at step 3.
11

Hannah has $1,000 in her savings account. During month 1, she withdraws $25. Each successive month, she withdraws $10 more than the previous month. The amount left in her account after 10 months can be represented by this expression: . How much remains in Hannah’s savings account after 10 months?

Question illustration
A
$300
B
$210
C
$200
D
$100
12

In a geometric sequence, and . What is the 12th term?

Question illustration
A
5,616
B
354,294
C
14,350,365
D
234,812,358
13

The explicit rule for an arithmetic sequence is What is the value of the 47th term? Round to the nearest tenth, if necessary.

Question illustration
A
–55.7
B
–26.4
C
45.6
D
65.8
14

What is the explicit formula for the arithmetic sequence ?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
15

Khalid wrote the sequence below.Which formula can be used to find the 10th term of the sequence?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D

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