Algebra 2 review

What is the inverse of the function y = 4x + 5?

Tags

CCSS.HSF-BF.B.4A

Which situation could be modeled using a geometric sequence?

• A cell phone company charges $30.00 per month for 2 gigabytes of data and $12.50 for each additional gigabyte of data.

• The temperature in your car is 79°. You lower the temperature of your air conditioning by 2° every 3 minutes in order to find a comfortable temperature.

• David’s parents have set a limit of 50 minutes per week that he may play online games during the school year. However, they will increase his time by 5% per week for the next ten weeks.

  
  

•  Sarah has $100.00 in her piggy bank and saves an additional $15.00 each week. 

  
  

Tags

CCSS.HSF.BF.A.2

• -1

• 0

• 6

Tags

CCSS.HSA-REI.B.4B

There are 400 students in the senior class at Oak Creek High School. All of these students took the SAT. The distribution of their SAT scores is approximately normal. The number of students who scored within 2 standard deviations of the mean is approximately 

• 75

• 95

• 300

• 380

Answer explanation

2 standard deviations of mean is 95% of normal dist.

so 95% = .95

.95 x 400 (total number of students) = ?

Tags

CCSS.HSA.APR.D.6

Monthly mortgage payments can be found using the formula below, where M is the monthly payment, P is the amount borrowed, r is the annual interest rate, and n is the total number of monthly payments.
If Adam takes out a 15-year mortgage, borrowing $240,000 at an annual interest rate of 4.5%, his monthly payment will be

• $1379.09

• $1604.80

• $1835.98

• $9011.94

Answer explanation

n = 15 x 12 = 180

• 1

• 2

• 65.4

• 114.6

Tags

CCSS.HSN.CN.C.8

Which equation represents a polynomial identity?

• 
• 
• 
• 

Tags

CCSS.HSA.APR.C.4