Unit 2 Lesson 26

Kiran plans to save $200 per year. Bank A would pay 6% interest, and Bank B would pay 4% interest (both compounded annually). How many years will it take to save $10,000 if he uses Bank A? Bank B?

• Bank A: 28 years, Bank B: 24 years

• Bank A: 24 years, Bank B: 28 years

• Bank A: 27 years, Bank B: 25 years

• Bank A: 25 years, Bank B: 27 years

Find the sum of the first 20 terms of the sequence:

• approximately 1

• approximately 2

• approximately 3

• approximately 4

Tags

CCSS.HSA.SSE.B.4

Find the sum of the first 20 terms of the sequence:

• approximately 8

• approximately 9

• approximately 10

• approximately 11

Tags

CCSS.HSA.SSE.B.4

Find the sum of the first 20 terms of each sequence:

• approximately 6

• approximately 7

• approximately 8

• approximately 9

Tags

CCSS.HSA.SSE.B.4

Diego wonders how much money he could save over 25 years if he puts $150 a year into an account with 4% interest per year compounded annually. He calculates the following, but thinks he must have something wrong, since he ended up with a very small amount of money:

What did Diego forget in his calculation? How much should his total amount be? Explain or show your reasoning.

Tags

CCSS.HSF.BF.A.2

Which one of these equations is equivalent to

• 
• 
• 
• 

Tags

CCSS.HSA.APR.D.7

The formula for the sum  $s$  of the first  $n$  terms in a geometric sequence is given by  $s=a\left(\frac{1-r^n}{1-r}\right),$  where  $a$  is the initial value and  $r$  is the common ratio. A medicine is prescribed for a patient to take 700 mg every 12 hours for 5 days. After 12 hours, 4% of the medicine is still in the body. How much of the medicine is in the body after the last dose?

• About 723 mg

• About 726 mg

• About 727 mg

• About 729 mg

Tags

CCSS.HSA.SSE.B.4

Is $a^3+b^3=\left(a+b\right)\cdot\left(a^2-ab+b^2\right)$  an identity? Explain your reasoning.