Final exam review- Algebra 2

Front

Change to Logarithmic Form: 5^3 = 125

Back

log₅ 125 = 3

Front

Factor Completely: 3x² + 18x + 15

Back

3(x + 5)(x + 1)

Front

Calculate the total amount paid after 8 years for $7,400 at 9.5% interest compounded quarterly.

Back

$15,683.28

Front

What type of sampling is used when a company surveys all households on a randomly chosen block?

Back

Cluster Random Sample

Front

Find the Z-score for x = 29, Mean = 22, Standard Deviation = 3.1.

Back

2.26

Front

Definition of Logarithm

Back

A logarithm is the exponent to which a base must be raised to produce a given number.

Front

What is the formula for compound interest?

Back

A = P(1 + r/n)^(nt) where A is the amount, P is the principal, r is the rate, n is the number of times interest is compounded per year, and t is the time in years.

Front

What is a Simple Random Sample?

Back

A sample where every member of the population has an equal chance of being selected.

Front

What is a Stratified Random Sample?

Back

A sampling method where the population is divided into subgroups and random samples are taken from each subgroup.

Front

What is a Z-score?

Back

A Z-score indicates how many standard deviations an element is from the mean.