Exploring Arithmetic Sequences with Dr. Ihrig

What type of formula is being discussed in the video?

• Logarithmic formula

• Exponential formula

• Recursive formula

• Quadratic formula

Which of the following subscripts indicates a recursive formula?

• n - 1

• n + 1

• n + 2

• n

Tags

CCSS.HSF.IF.A.3

Why can’t the correct answer be option B or D?

• They have n + 1 as the subscript

• They have n + 2 as the subscript

• They have n as the subscript

• They have n - 1 as the subscript

Tags

CCSS.6.EE.B.6

What is the first term (a sub 1) in the given sequence?

• 19

• 7

• 11

• 4

Tags

CCSS.HSF.BF.A.2

What is the common difference in the sequence?

• 2

• 4

• 5

• 3

Tags

CCSS.HSF.BF.A.2

What is the first step in deriving the explicit formula?

• Substitute the value of n

• Copy the explicit formula from the formula sheet

• Erase the letter D

• Simplify the equation

Tags

CCSS.HSF.BF.A.2

What value is substituted for a sub 1 in the explicit formula?

• 4

• 11

• 7

• 19

Tags

CCSS.HSF.BF.A.2

What is the result of distributing 4 in the explicit formula?

• 4N and -4

• 4N and +4

• 4N and +7

• 4N and -7

Tags

CCSS.HSF.BF.A.2

How do you verify the simplified explicit formula using a graphing calculator?

• By checking if the graph is a hyperbola

• By checking if the graph is a parabola

• By checking if the graph is a straight line

• By checking if the graph is a circle

Tags

CCSS.HSF-IF.C.7A

What should you do when you see an arithmetic sequence in a problem?

• Guess the answer

• Ignore the sequence

• Open the formula sheet and use the calculator

• Use a different formula

Tags

CCSS.HSF.BF.A.2